What if my baby rolls onto their tummy in their sleep?
Short answer: The NHS says to move your baby onto their back if they roll, until they can roll from front to back on their own.
Here is the detail behind that answer, taken from current UK guidance from the NHS and the Lullaby Trust.
Things to check
- Check the mattress size listed for the frame. 140 x 70cm is common, but not universal.
- Keep every conversion panel, bolt and instruction sheet for the toddler-bed stage.
- Look at adjustable base heights, teething rails and any matching furniture.
What the guidance says
- Move your baby onto their back if they roll, until they can roll from front to back by themselves.
- Always place your baby on their back to sleep, in the feet-to-foot position (feet at the bottom of the cot, Moses basket or pram).
Related questions
What is a cot bed?
A cot with removable sides and ends that converts into a toddler bed, most often taking a 140 x 70cm mattress.
Shop at Baby Kingdom
- Astrid Mini Cot Bed - White
- Vox Milenne Cot Bed
- Bantam Cot Bed, Under Drawer + Fibre Mattress - White
- Grace Inspire Cot Bed - Unicorn
Check each product page for its exact dimensions, mattress size, age and weight limits and safety standards.
More advice
Where should I put the cot in the nursery?Can a 9 month old sleep on their tummy?Safer sleep standards quizWhat safety standard should a cot have?Room sharing for the first six months: a practical set-upRoom temperature and overheating quizAll safe sleep and sleep spaces advice →
Sources
- NHS: Sudden infant death syndrome (SIDS) (accessed 2026-10-21)
General information only, not medical advice. Always follow your product's instructions. If you are worried about your baby, contact your GP, health visitor or 111. In an emergency, call 999.