Breaking Out of the Swaddle
Many babies become so strong and sneaky that they can break out of the swaddle. This doesn't mean your swaddling days have to be over.
First, make sure that you're using a swaddle designed specifically for swaddling (with velcro or a zipper) rather than a "swaddle blanket."
Then, try this swaddle Houdini trick:
If your little one is rolling from back to tummy, it is time to transition out of the swaddle. This blog about transitioning out of the swaddle can help.