Needing support and advice

I am 10 days pp and my husband has been home with me since we had her. At night, I sleep 9-2:30 and he sleeps 2:30-8:30. Baby has a really hard time sleeping in bassinet because of gas so we alternate between it, our arms, and a lounger. My husband goes back to work tomorrow and I have no clue what I’m going to do! I’ve already been feeling so sick from stress and not sleeping enough. Does anyone have tips to help gassy babies sleep flat? Or tips to manage newborn life by myself?