My baby is 5mo and knows how to flip. The issue now is, she will keep flipping to be on her tummy and neck held high when I coax her to sleep. Any one with the same issue? How do you manage this issue?

Yes. I let him do it because he is currently exploring new things that he can do so I guess there's nothing to worry about. :) He does this too while sleeping. If he becomes uncomfortable then that's the time I put him back to his normal position. And we do this almost 100x a day. Hehe. :) so you're not alone mommy! It takes a lot of patience. All we need to do is to look after them all the time to prevent any accidents. But there's really nothing to worry about. :)