Rolling over

Desirae

So my little girl is now 4.5 months old and a couple days ago she mastered rolling over from her back to belly and has since rolled just a couple times from belly to back but we are starting to put her in her crib now instead of her rock n play since her reflux is under control and I am so nervous she is gonna roll onto her belly and not be able to breathe. How has everyone else dealt with this?!