Sleepless in BabyTown

Millie writes:
My almost five month old baby started rolling over from tummy to back a few weeks ago and she now will do it in her sleep which in turn wakes her up and startles her. She is a tummy sleeper and will not sleep on her back. Once she wakes herself up I have a very hard time getting her to go back to sleep. This goes on all night long. I have tried rolling up blankets and nestling them beside her but that did not work. HELP ! I'm a walking zombie ! Any suggestions ?

Dear Millie,
Believe me, you have my sympathy! But this is not my expert subject, so I'm going to chicken out and send you to the experts - Mother and Baby