One evening you hear a soft thump, little feet on the floor, and a proud face appears at your door. Or there is no drama at all, just a cot that suddenly looks very small. Either way, most families reach the same question: is it time to move from a cot to a big-kid bed?
I am Daisy, and I have sat on a bedroom floor at midnight wondering if we moved too soon or waited too long. Your child is leaving the sleep space they have always known, and you are trusting them with a whole room. You need good timing, a safe room, and a calm plan you can repeat.
Quick Answer
Move straight away if your child climbs out of the cot, because climbing is a safety issue and a fall can cause serious injury. Also move if your child is too big for the cot or over the maker’s height or weight guidance. If your child is not climbing and fits the cot safely, there is no hurry. Many children do better waiting until around two and a half to three years, when they understand simple rules like staying in bed. Choose a low bed, toddler-proof the room, fit a stair gate, keep the routine identical to before, and expect a novelty phase of getting out of bed.
When Is It Time to Make the Switch?
There is no single right age. Some toddlers must move before two because they are strong climbers. Others sleep safely in a cot well past three. Watch your child and the cot, not the calendar.
Signs you need to move now
- Your child climbs or tries to climb over the cot side, even once.
- The top of the cot rail is below your standing child’s chest level.
- Your child looks cramped or is over the cot maker’s height or weight guidance.
- The cot is damaged or loose.
If climbing is the reason, do not wait for a better week. Move now. A mattress on the floor in a safe room for a few nights is safer than one more night of climbing while a new bed arrives.
Signs you can safely wait
If your child sleeps well, is not climbing, and is within the cot maker’s height and weight guidance, keeping the cot is fine. Waiting often helps, because an older toddler is more likely to understand a simple rule and stay in bed. A happy sleeper does not need a big change just because friends have moved. If a new baby is coming, try to switch six to eight weeks before the birth or a few weeks after, so your toddler does not feel the baby took their bed.
Choosing the Right Big-Kid Bed
Keep it simple and low. A low toddler bed or low single bed is safest, because a roll or step out means only a short distance to the floor. Avoid high beds, cabin beds, and bunk beds for toddlers, however exciting they look in the shop.
A guard rail can help stop rolling out, but it must be fitted correctly. Choose a rail that meets safety standards, follow the maker’s instructions, and check there are no entrapment gaps where a head, neck, or body could get trapped between rail, mattress, and frame. If the bed is against a wall, follow guidance carefully and ensure no gap between mattress and wall. Use a firm, snug-fitting mattress and recheck the fit when you change bedding.
Room-and-Bed Safety: Make the Whole Room Safe
This is the most important step. Once your child is in a bed, they can get up alone at night, so the whole room is now their sleep space. Before the first night, get down to toddler height and look at the room through their eyes.
- Anchor furniture to the wall, including bookcases, drawers, and wardrobes, so nothing can tip.
- Secure cords from blinds, curtains, lamps, and monitors well out of reach.
- Remove small objects and hazards, including coins, button batteries, medicines, and creams.
- Keep heaters away from the bed, and the bed away from windows and radiators.
- Place a soft rug or mat beside the low bed in case of a roll-out.
Fit a stair gate at the top of the stairs, or across the bedroom doorway if that suits your home and follows the gate maker’s guidance, so your child cannot wander the house alone at night. They can still call you, and you can still hear them.
Never lock your child in the room. Never lock the bedroom door, and do not use anything that stops your child getting out in an emergency or stops you getting in quickly. Locking a door can be dangerous in a fire and frightening for a child who wakes unwell. Use a gate and calm returns to bed instead. If wandering becomes a pattern, our guide to what to do when your toddler keeps getting out of bed gives gentle steps that help without a bedtime battle.
How to Make the Switch, Step by Step
1. Talk about it and let your child help
For a few days before, talk about the new bed in a warm, matter-of-fact way. Let your child choose between two sets of bedding or place a favourite soft toy on the pillow. Keep the rest of the room familiar and do not redecorate everything in the same week.
2. Keep the bedtime routine identical
My strongest tip from experience: keep the bedtime routine identical to before. Same bath, pyjamas, stories, song, and goodnight words, in the same order and at the same time. The bed is new, so let everything around it stay familiar. That sameness tells your child sleep itself has not changed.
3. Set one or two simple rules
Keep rules short: we stay in bed, and we call Mummy or Daddy if we need something. Practise in the day as a game, and praise your child in the morning for any part they managed.
4. Plan your response for getting out of bed
Decide before night one what you will do when your child gets out. Walk them back with little chat, tuck them in, repeat one short phrase such as bedtime now, sleep time, and leave. Repeat the same response each time. Long talks at 2 a.m. reward getting up. If fear plays a part, for example if your toddler is scared of the dark, a low night light with its cord secured out of reach and extra reassurance before lights out can help. Comfort first, then back to the calm routine.
What to Expect in the First Two Weeks
Expect a novelty phase of getting out of bed. Many toddlers love the freedom for a few nights, then test it fully in week two. Calling out, appearing at the door, and asking for water, a toy, then one more hug is normal testing, not bad behaviour or proof you moved too soon. Sleep may be unsettled for one to two weeks while your child learns to stay in an open bed. Avoid starting during illness or other big changes if you can. If bedtime takes over an hour night after night, check whether your child is overtired, the routine is too long, or new steps are creeping in, and steady the routine first.
Mistakes to Avoid
- Moving too early without a safety reason, when waiting for understanding of simple rules would be easier.
- Choosing a high bed, mid-sleeper, or bunk, which adds fall risk. Low is safest.
- Forgetting the room. A safe bed in an unsafe room is not safe.
- Locking the door. Never lock your child in. Use a stair gate instead.
- Changing everything at once, such as a new bed, new room, and toilet training together.
- Giving up after two hard nights. Unless it is unsafe, give a steady routine one to two weeks.
When to Ask for Help
Most wobbles settle with time, safety checks, and a steady routine. Ask for support if problems last, get worse, or affect your child’s daytime mood, appetite, or learning, or your own wellbeing. You deserve support too, especially if you feel exhausted or low.
When to See a Doctor
Talk to your doctor or health visitor promptly if you notice any of these, or if your instinct says something is not right:
- Loud snoring most nights, pauses in breathing, gasping, or very restless sleep.
- Unusual daytime sleepiness, being hard to wake, or falling asleep in unusual places.
- Sleep problems after an injury or fall, or a sudden change in behaviour.
- Ongoing pain, breathing difficulties, or another health issue disturbing sleep.
- Dangerous night behaviour you cannot make safe, such as climbing high furniture.
This article is general information and parent experience only. It is not medical advice, and no method can be promised to guarantee a sleep outcome. If you are worried about your child’s health, breathing, development, or safety, seek personal advice from a qualified health professional who knows your child.
Frequently Asked Questions
What age is best to move from a cot to a bed?
There is no single best age. Move straight away if your child climbs out or outgrows the maker’s guidance. If neither applies, many children cope best around two and a half to three years, when they understand simple rules. A younger child who must move for safety can do well with a low bed, a safe room, and a steady routine.
What if my toddler keeps getting out of the new bed?
Keep your response the same each time: little chat, walk them back, tuck in, one short phrase, and leave. Check the room is safe, a stair gate is fitted, and the door is never locked. The novelty phase usually fades in one to two weeks with consistency.
Should I use a guard rail or a mattress on the floor?
Both can work safely. A low bed with a correctly fitted rail that meets safety standards and has no entrapment gaps suits many families. A firm floor mattress in a toddler-proofed room also suits a young climber. Check for gaps whenever you change bedding.
Can we go back to the cot if it goes badly?
If your child was not climbing and still fits the cot safely within the maker’s guidance, a short return while you wait a few weeks is reasonable and not a failure. If your child was climbing, do not go back, because the fall risk remains. Make the new room safe, use a low bed or floor mattress, and seek support if nights stay very difficult.
Please read our Disclaimer. Every child settles at their own pace, and needing more time does not mean you have done anything wrong.