I know back is best but my littles sleeps SO well on her tummy. She loves to have her leg pulled up under her like a little frog and her hands under her head. She looks so adorable. I want to do what's best for her and I know her back is the safest but she will jump like she feels like she's falling when she's on her back and it wakes her but she never does it on her tummy. I've also noticed when she's on her back she will make a grunting noise and at times a gasping noise but she never makes it when she's on her tummy. She will sigh when she's on her tummy. But it sounds like content and not labored breathing. Does anyone else's little ones like their tummy more than their back? Do you let them sleep on their tummy or just force their back sleeping?