According to the American Academy of Pediatrics, it is recommended that you stop swaddling your child around the time that they are 2 to 4 months old or as soon as you notice them starting to roll over on their own," McCutchen says. "This transition helps prevent against various sleep-related dangers and SIDS."   To make this transition, McCutchen advises clients to start by letting their baby sleep with one arm out of the swaddle for a couple of nights. "Allowing your baby to sleep with one arm out will allow them to get used to having a free arm out and help them to get comfortable moving without triggering their startle reflex," she says. "After a few nights, you can transition your baby to a Halo Sleepsack, which allows your baby to sleep with both arms out while still getting the comfort and warmth that they were accustomed to with their swaddle.