I've heard that most babies end up sleeping and preferring to be on their tummy than on their backs at a certain point. My daughter is 4 months and 2 weeks and she doesn't seem like she will be rolling over to her tummy anytime soon? She still HATES tummy time - she quickly rolls to her back when on her tummy! Anyways, I am not in a rush for her to sleep on her tummy but I think its cute when babies sleep on their tummys with their butts in the air!
If your LO is a tummy sleeper when did they start?