1. Around 0-2 months: Swaddle or swaddle-style sleeping bag It is more appropriate to swaddle or wear a swaddle-style sleeping bag for babies before 2 months (especially before the full moon). On the one hand, swaddling can effectively prevent the startle reaction; on the other hand, the swaddling effect is good, and the baby will feel more secure. You can swaddle yourself with a quilt or blanket....