How can you keep a baby from rolling on their tummy to fall asleep?

If baby can roll over, you don’t have to. Just make sure there is nothing else in the crib.

I ordered this today to alert when she rolls over I did alot of research today for the same question you have..also they make (which I have) a side sleeper wedge for baby were they cant roll I'll show a pic in a bit

If baby rolls over on his own he should be fine. Just like justgotaname said just b sure to make sure nothing is in the bed

I use this when I have her on my bed only not to sleep in. I use it say I have to run to the bathroom I'll put her in this a minute so she dosen't roll off the bed. I like it better then ever using pillows around her that's definitely not safe.

If they can roll on their own then you don’t have to. There’s absolutely no reason