sleep on tummy

Kitty
My LO is 6 and half months, and she likes to roll over at night to sleep on her tummy. No matter how many times I roll her over so she can sleep on her back (and accidentally wake her up many times), she still rolls over again. I'm aware of SIDS, but I can't just keep rolling her over all the time at night. Does any mom have similar or same situation? What should I do?