For safety reasons, you should stop wrapping your baby when they begin to roll onto their tummy.
Generally, the best way to stop wrapping is to do so gradually. This can be initiated by leaving one arm out of the swaddle. From there, progress to leaving either both arms or legs out of the wrap. You can also incrementally loosen the wrap a little at a time, to build up to the point where you don’t need to wrap. This gradual transition makes it easier for your baby to adjust to sleeping unwrapped. The process may last a week or so, and your baby’s sleeping pattern may be affected. Don’t worry – this is common. Once your baby is used to sleeping unwrapped, things should return to normal.
When using a sleeping bag, ensure the sleeping bag is the correct size for your baby. Choose one with a fitted neck, armholes or sleeves with no hood, and check your baby can’t slip inside the bag and become completely covered. Dress your baby the same way you would if using a wrap. Never use a wrap and sleeping bag together, as your baby may overheat. In cooler months, you can add a sheet or lightweight blanket, tucked in firmly over your baby, as you would if they were wrapped.