DD is 4 months old and out growing her rock n play. We bed share half the night and she sleeps the other half in her rnp. I've been trying to get her to nap in her mini crib with zero success. She will stay asleep and nap if she in on her tummy. I have the mini in the living room so she is never alone. I'm comfortable with her napping on her tummy but my question is when can I let her sleep at night on her tummy? When we cosleep we snuggle on our sides and she does fine with that but will not side sleep or back sleep in the mini. She can roll from belly to back and has really good arm strength. We are not swaddling either. So what do you mama's think? Is belly sleeping ever ok?