crib tummy rolling phase?

Ka
Hi mommys! Just looking to see if anyone else has experienced this and what they did. My almost 7 mo. Old has been rolling onto her tummy in the middle of the night and cries every time until I get her. It happens seriously every two hours. Before this she didn't sleep wonderful but she only woke maybe once or twice in the night versus five ish times. 
She has been doing this for the last two weeks or so.
Anyone have advice? I'm one tired mom.