Mine did the same thing too. I tried to spend some time during the day teaching him to turn his head to the side. I actually would turn him myself eventhough he fought me a little. He did figure out how to just relax on his tummy. But the bad news is that as soon as he figured out how to get into the crawling position, if he happened to turn over in his sleep he immediately pushes up onto his hands and knees and completely wakes up. We are still dealing with that because it results in 4 or 5 night wakenings. Anyway, I think that if your baby's mattress is real firm and she is breathing through her nose, there is room to breath and I wouldn't think she woudl be at a risk for suffocation if her head is turned into the mattress.