The only thing preventing my DD from sleeping through the night is that she keeps rolling onto her tummy and starts crying. She sticks her arms straight out and flails around. She started rolling from tummy to back when she was 2 months old. I'm pretty sure this isn't all that uncommon?...I flip her back onto her back but then she's upset. And we're going through sleep training right now so I'm frustrated that this is waking her up, since that means she'll have to cry and it messes up the huge progress in sleep that she'd otherwise be having. Is this just a phase? Or did you have to pretty much reteach your LO to roll back over? She's doing the same thing during the day time. IDK why she's "forgotten"