Stop swaddling with your baby's arms enclosed as soon as they show signs of trying to roll—do not wait for the first complete roll. Continue to place your baby on their back at the start of every sleep. If they can roll from front to back and back to front by themselves, the NHS says they can be left in the position they choose.
What changes when rolling starts?
Rolling does not end the safer-sleep rules, but it changes two practical decisions: whether your baby's arms can be enclosed and whether you need to turn them back after they move. The thresholds are different, which is why the advice can seem confusing.
| What your baby can do | What to do for sleep |
|---|---|
| Shows signs of trying to roll | Stop swaddling with the arms enclosed now. Put your baby down on their back. |
| Rolls onto the front but cannot roll back | Start every sleep on the back and move your baby back when you notice they have rolled. |
| Rolls from back to front and front to back | Still start every sleep on the back; you do not need to keep turning them back. |
| Sleeps in a cot or Moses basket | Use a firm, flat mattress and keep the sleep space clear—no positioner, wedge, nest, pillow or soft toy. |
Why stop the swaddle before the first full roll?
A baby may practise the movement unexpectedly during sleep. If their arms are wrapped inside the material, they may roll onto their tummy without being able to use their arms to change position. The Lullaby Trust therefore advises stopping arms-in swaddling when signs of rolling appear, rather than waiting for a successful roll.
Do not replace the swaddle with a weighted blanket, a product that restricts rolling or a sleep positioner. These do not make tummy sleeping safe and can introduce covering, overheating, trapping or airway risks.
How can you make the transition without adding loose bedding?
Your baby may need a few nights to get used to sleeping with free arms. Keep the bedtime sequence familiar, but keep the cot simple. A correctly sized baby sleeping bag with free arms can be used if it fits securely around the shoulders and is suitable for your baby's weight and the room temperature. Follow the product instructions and do not add another blanket on top.
If you use a blanket instead, the NHS advises a lightweight cellular blanket, firmly tucked in no higher than the shoulders, with your baby in the feet-to-foot position. Whichever option you use, keep the head uncovered and check the chest or back of the neck for overheating rather than judging by cool hands or feet.
Should you turn a sleeping baby back onto their back?
Always place your baby on their back at the beginning of every daytime and nighttime sleep. If they roll but cannot yet roll both ways, the NHS advises moving them back onto their back when you notice. You do not need to stay awake watching every movement or use a device to hold them in place.
Once your baby can roll from front to back and back to front independently, you can leave them in the position they choose after being placed down on their back. Keep the cot clear so they have room to move and make sure the mattress remains firm and flat.
Rolling changes daytime safety too
The first complete roll can happen before you expect it. Do not leave your baby unattended on a bed, sofa or changing table, even for a moment. Changing nappies on a mat on the floor removes the fall risk.
Give your baby supervised, awake tummy time on the floor so they can practise head control and movement. Tummy time is for awake play; it is not a reason to place a baby on their front for sleep.
When should you ask for help?
Speak to your health visitor or GP if your baby moves one side much less than the other, seems unusually floppy or stiff, loses a movement they previously had, or you are unsure how to adapt sleep because of prematurity, a medical condition or specialist equipment.
Call 999 if your baby is struggling to breathe, turns blue or grey, has a seizure, collapses or cannot be woken. A movement monitor, wearable or baby-tracking app cannot prevent sudden infant death syndrome or make an unsafe sleep space safe.
Related United Kingdom guides
The UK guides put rolling and sleep beside age-specific development, feeding and NHS care.
View references and primary sources
- NHS — Sudden infant death syndrome (SIDS)accessed September 2026
- NHS Best Start in Life — Safer sleepaccessed September 2026
- The Lullaby Trust — Swaddlingupdated 30 April 2026 · accessed September 2026
- The Lullaby Trust — Baby's airwayaccessed September 2026
- NHS — Baby and toddler safetyaccessed September 2026