Making the move from a cot to a ‘big kid’ bed is one of the most exciting and often daunting milestones in early childhood! As a paediatrician, I’m asked about this transition almost daily. Parents worry about sleep disruptions, safety, and whether they’re making the change at the right time. The truth is, every child is different…but there are clear, evidence-based strategies that can make this transition smoother for both you and your toddler. In this guide, I’ll walk you through the most common questions parents ask about transitioning to a toddler bed…starting with first and foremost WHEN you should make the move.  

When Should I Transition My Toddler to a Big Bed?

One of the most common questions I hear is: “How do I know if my child is ready?” If you take nothing more from this blog than this one statement …if your child is younger than 2.5 years and you’re thinking of transitioning to a big bed DELAY DELAY DELAY!

Toddlers are often moved out of a cot too soon for two main reasons:

1. There’s a new baby arriving or
2. Solving a sleep problem such as climbing out of the cot.

  The problem is: Under 2.5 years old toddlers haven’t yet developed impulse control and will likely be in and out of the bed multiple times. If your child is still sleeping well in their cot and not attempting to escape, there’s no rush. In fact, keeping them in the cot longer can help maintain good sleep habits. If there is a new sibling arriving they will most likely be in a bassinet in your room for the first 6 months - if your toddler is still sleeping happily in their cot after this, look at hiring or getting a second cot for the new baby (there are a phenomenal amount of high quality second hand cots around).

What happens if my toddler is under 2.5 years and climbing out of the cot?

This is a genuine safety risk and shouldn't be ignored (cots can be high and the fall dangerous) immediate action is needed …some kids are phenomenally strong and agile. If your toddler under 2.5 years is climbing out it’s probably a good indication to start them in gymnastics or at your local parkour club.

Tips to stop toddlers climbing out of cots or cribs:

TIP 1: Lower the mattress to the lowest available level

• most cribs will have an option where it’s nearly on the ground

 

TIP 2: Keep them in their sleeping sack

• Where possible I recommend sleeping to stay on until you child moves to a big bed

 

TIP 3: If your houdini has learnt to un-zip their sleeping bag

• Put it on backwards or add a t-shirt over the top

 

TIP 4: Incentivise not climbing out

• Set up a star chart or similar to break the cycle before it starts
• You can read more about setting up clear toddler incentives in my Toddler Toolkit course.

 

How Do I Make the Transition to a Big Bed Smooth?

Preparation is everything. Toddlers thrive on predictability, so sudden changes can feel overwhelming.

Here’s how to set them up for success:

• Involve your toddler: Let them choose their sheets or pillow
• Keep the bedtime routine identical: Same bath, books, songs
• Use familiar sleep cues: Comfort toys, white noise, lighting

The goal is to make the bed new, but everything else feel exactly the same.

What If My Toddler Keeps Getting Out of Bed?

This is, without question, the biggest challenge parents face. Once you remove the cot, you remove the physical boundary. Now you need to rely on behavioural boundaries. The are lots of different strategies I recommend in my Toddler 2-5 year sleep program. One of the ones that every parent will need in their arsenal at some point is the silent return.

What to do:

• Calmly and consistently return your toddler to bed
• Keep interaction minimal; no talking, no negotiating
• Repeat as many times as needed

It’s called the “silent return”, and it works; but only with consistency (from ALL CAREGIVERS).

What NOT to do:

• Don’t get into long conversations
• Don’t offer rewards in the moment
• Don’t let them stay up “just this once”

Your toddler is learning: “Does this boundary really exist?”   Your job is to show them that it absolutely does.

Parental alignment and parental consistency is paramount

If your toddler knows one parent will come in and lie with them for 2 hours they will have them there every night. See my Toddler 2-5 year Sleep Program for other tips and hints on parent and sleep strategies.

Why Has My Toddler’s Sleep Suddenly Gotten Worse?

Many parents say: “They used to sleep through the night, now everything’s fallen apart.” This is completely normal.

Why it happens:

• Your toddler now has freedom to move
• The room suddenly feels less secure than a cot
• They are testing new boundaries and independence

What helps:

• Stick to your routine without exception
• Respond consistently overnight
• Avoid introducing new habits (like co-sleeping if it wasn’t already happening)

Sleep often worsens before it improves, this is part of the adjustment process.

Should I Use a Toddler Bed, Bed Rails, or a Floor Bed?

There’s no single “right” option, it depends on your child and your parenting style.

Common options:

Toddler bed with rails

• Great for children who need a sense of enclosure
• Lower to the ground, reducing fall risk

Regular bed with guardrails

• Practical long-term solution
• Works well for older toddlers

Floor bed

• Encourages independence
• Safest for children who move a lot during sleep

From a medical perspective, safety and consistency matter more than the type of bed.

What bed should I avoid?

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Big Beds to Avoid:

🚫 Toddler Beds & Setups Doctors Recommend Avoiding

1. ❌ High or Adult Beds (Without Proper Safety)

 

Why doctors warn against them:

• Toddlers are at high risk of falling from elevated beds
• Can cause head injuries or fractures

👉 Medical guidance:

• Avoid adult-height beds unless properly modified
• Falls and entrapment are known risks

Better option: low toddler bed or floor bed

2. ❌ Bunk Beds or Loft Beds (Under Age 6)

Why doctors warn against them:

• High fall risk during sleep or climbing
• Toddlers lack coordination and safety awareness

👉 Clear medical advice:

• Do not use bunk beds under age 6

 

3. ❌ Beds with Gaps or Poorly Fitted Rails

Why doctors warn against them:

• Risk of entrapment (head or body getting stuck)
• Can lead to serious injury or suffocation

👉 Safety guidance:

• Gaps between mattress and frame must be minimal
• Poorly fitted rails can be dangerous

4. ❌ Portable / Loose Bed Rails or Bumpers (Improperly Installed)

Why doctors warn against them:

• Can create dangerous gaps
• Children can become trapped or suffocate

👉 Medical advice:

• • Only use if tightly fitted with no gaps at all

• Ensure all material is breathable

• As with cots, never use bumpers

5. ❌ Beds Placed Against Walls (Without Clearance)

Why doctors warn against them:

• Toddlers can become trapped between mattress and wall
• Risk of suffocation

👉 Recommendation:

• Keep beds slightly away from walls
• Especially important for floor beds

6. ❌ Soft, Cluttered Sleep Surfaces & Water Beds

Why doctors warn against them:

• Soft items can block airflow
• Increase risk of suffocation

👉 Avoid:

• Heavy quilts
• Large pillows (under age 2 especially)
• Too many soft toys

7. ❌ Baby Sleep Sacks in Beds (After Transition)

Why this matters:

• Designed for cots; not walking toddlers
• Can increase risk of tripping and falling out of bed

👉 Guidance:

• Switch to regular sleepwear once in a bed
• Lots of toddler sleep sacks convert to ‘zipped legs’ which can be a great transitional option

8. ❌ Beds Under Windows or Near Hazards

Why doctors warn against this:

• Risk of climbing → falls from height
• Access to cords → strangulation risk

👉 Recommendation:

• Never place a toddler bed under a window
• Ensure any curtain cords are out of reach one your toddler moves to a bed

🧠 What Doctors Actually Recommend Instead

Across paediatric guidelines, the safest setups are:

✅ Low toddler bed or floor mattress

• Reduces fall risk

✅ Firm mattress, minimal bedding

• Reduces suffocation risk

✅ Clear, clutter-free sleep space

• Safer breathing environment

✅ Fully childproofed room

• Because toddlers will explore

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⚠️ The Big Picture (What Matters Most)

Doctors aren’t focused on the style of bed (race car vs wooden frame). They care about 3 key risks:

1. Falls

→ Avoid height

2. Entrapment

→ Avoid gaps

3. Suffocation

→ Avoid soft clutter If you're looking for a great toddler bed that fits all these requirements I love Lifely Beds (I'm a formal ambassador!) you can use promocode: DRGOLLY50 at checkout to get $50 off!!

How Do I Keep My Toddler Safe at Night?

Once your toddler is no longer contained in a cot, you need to think beyond the bed.

Childproof the entire room:

• Anchor furniture to the wall
• Remove cords, blind strings, and hazards
• Use safety locks on drawers
• Cover power outlets

Manage access:

• Use a baby gate or door safety handle if needed
• Keep the environment calm and predictable
• Ensure front/external doors are deadlocked

Think of the room as a safe sleep zone, not just the bed. [embed]https://www.instagram.com/p/DYg7LtpGoUF/?utm_source=ig_web_copy_link&igsh=MzRlODBiNWFlZA==[/embed]

Is It Okay to Transition to a Big Bed During Other Big Changes?

This is a very important question. Parents often attempt the bed transition during:

• Toilet training
• Moving house
• Starting childcare
• Welcoming a new sibling

My advice:

If possible, avoid stacking major changes. Toddlers have limited emotional capacity for adjustment. Too many changes at once can lead to:

• Sleep regression
• Behavioural challenges
• Increased anxiety

If you must proceed, go slowly and expect a longer transition period.

What If My Toddler Refuses the New Bed?

It’s common for toddlers to initially reject the new bed and ask for their cot back.

How to handle it:

• Stay calm and reassuring
• Acknowledge their feelings: “It’s different, isn’t it?”
• Keep the boundary firm; don’t switch back

Make the bed appealing:

• Use favourite bedding or characters
• Introduce a special “bedtime toy”
• Create a positive association with the space

Remember, resistance doesn’t mean failure, it just means your child is adjusting.

Can I Skip the Toddler Bed and Go Straight to a Regular Bed?

Yes, absolutely. Many families skip the toddler bed entirely and move straight to a single/twin bed.

When this works well:

• Your child is over 2.5–3 years
• You’re ready for a long-term sleep setup
• You use guardrails or a low bed

There’s no developmental requirement for a toddler bed; it’s simply one of several options.

How Long Does the Transition Take?

Another very common concern is: “How long will this take?”

Typical timelines:

• Some toddlers adjust in 2–3 days
• Others take 2–4 weeks
• A small number take longer if boundaries aren’t consistent

What determines success:

• Consistency from parents
• Clear boundaries
• Predictable routines

If you change your approach frequently, the transition will take longer.

The Three Core Challenges when transitioning a toddler from a cot to a big bed (And How to Handle Them)

When we step back, almost all parent concerns fall into three categories:

1. Safety

Solution: Childproof the room, not just the bed.

2. Sleep disruption

Solution: Maintain routines and stay consistent through regressions.

3. Boundaries

Solution: Calm, repetitive responses; EVERY. SINGLE. TIME.

A Simple Step-by-Step Transition Plan

If you’re unsure where to start, here’s a practical plan I often recommend:

Step 1: Prepare

• Talk about the new bed positively
• Let your toddler pick the linen
• Make the bed together

Step 2: Introduce gradually

• Let your child explore the bed during the day
• Start with naps if possible

Step 3: First nights

• Follow your usual bedtime routine
• Stay calm and confident

Step 4: Handle wake-ups

• Return your child to bed silently and consistently
• See notes on the CALM RETURN

Step 5: Reinforce

• Praise staying in bed in the morning
• Keep expectations clear

Step 6: Stay Consistent

• This is probably the most important item for parents
• You need to both be aligned with expectations and approach
• If one parent is permissive and the other strict nothing will work

Final Thoughts from a Paediatrician

Transitioning to a big bed is not just a physical change; it’s a huge developmental milestone. Your toddler is learning:

• Independence
• Boundaries
• Self-soothing skills

There may be some challenging nights, but with consistency (from ALL parents and care givers), most children adapt beautifully. If there’s one takeaway I want to leave you with, it’s this:

Consistency is far more important than perfection.

You don’t need the perfect bed, the perfect timing, or the perfect strategy; you just need a clear plan and the confidence to stick with it. If you’re currently going through this transition, know that you’re not alone and what you’re experiencing is completely normal. And if sleep challenges persist or feel overwhelming, don’t hesitate to seek guidance. Early support can make a significant difference for both you and your child.