My baby prefers to sleep on her tummy..what do I do??

Yonnie
My baby is 3 weeks old and since we been home she never likes to sleep in the bassinet she cries every hour so I started to let her sleep on me but now she's attached and every time she sleeps on me I move her to the bed or bassinet and she wakes up instantly but I figured it out today she prefers to sleep on her tummy instead of her back like she supposed to. I know it's a risk of sids and I don't want to deal with that but I rather have my baby sleep comfortable so do I keep letting her sleep on her tummy or stick with forcing her to sleep on her back?