Formula recommendations?

Hi guys! So my girl is here 🙂unfortunately she has a super sensitive tummy. We are supplementing formula since my breast milk just isn’t where it needs to be yet to keep her fed. We haven’t tried too many options because I’m worried switching too often will upset her stomach more. So far we’ve tried Enfamil Gentleease and Earths Best for sensitive stomach. We tried a couple similac kinds too but those were by far the worst.

She is very gassy and the formula basically goes right through her causing her uncomfortable poops.

If anyone had any recommendations for a very gassy and sensitive tummy I’d be so grateful.

Thank you!