Tummy sleeper😳

My baby girl is flipping herself onto her tummy and burying her face into the mattress to sleep. I've tried flipping her back while sleeping but she manages to go back the way she was. Are there any tricks people have to keep her on her back or do I accept that my girl is a tummy sleeper now. She's 5 months and very strong but I find it nerve wrecking!!! She can roll over both ways very well.