Help with baby sleeping

My baby only sleeps on her belly. Whether it’s on our chest or on her own while being 100% supervised, she only sleeps on her belly. The moment she goes on her back she gets fussy and gets hiccups and bad gas. I’ve read laying on their belly helps relieve gas pain. Getting sleep at night has been a nightmare. She naps on her belly in my arms, and it makes it impossible to get stuff done around the house. What am I supposed to do? I can’t watch her at night so of course she has to lay on her back to sleep, but she sleeps for like 5 minutes and is up fussing again. It breaks my heart to see her struggle with gas and I’ve tried everything to help it. All the belly rubbing and motions that are supposed to help. I know it’s short lived and it’s because her little system is trying to work itself out there’s just nothing more i can think to do.