We had to stop swaddling her about 6 weeks ago and she sleeps in a sleep sack. Thanks for the suggestions though.

Try using a sleep sack. It stops my daughter from flipping over in her sleep!

Swaddle her...that’s the only way my dd sleeps

I have tried putting her on her belly to sleep but she always hated it.

Mine has now turned into a belly sleeper. But she’s still waking every 3 hours since she hit the 4 month regression. But now she actually sleeps better on her tummy. Just give her some time to get used to it.

That's so normal and usually lasts less than a week. I would nurse/feed baby to sleep, wait till they're fully asleep and lay them down to nap on their belly. They'll get used to sleeping that way and usually prefer it. I lay my girl down on her back, she'll flip over and go right back to sleep on her belly.