My dd is 5 months old and has been rolling over onto her front for a couple of weeks now. The last couple of nights she has been rolling onto her front, I don't mind this so much as she can lift her head really well, but she is rolling over and then crying to be rolled back. As soon as I roll her back she rolls back onto her front. This is happening 4 or 5 times a night. She has rolled onto her front and actually slept for a couple of hours as well, so I know she can sleep in this position. Any advice?