Been through 3 formulas in 6 weeks 😞

Li
I am still having so many problems with my LO. Baby girl is 6 weeks old. We are formula feeding her (terrible match, tongue tie, small mouth, large nipples). I breast fed for a month but after two weeks we started supplementing with formula. She is EXTREMELY gassy. The gas she passes is super loud, and she is always uncomfortable when trying to push it out. Same with her BMs but she is not constipated. Going green, loose (but not diarrhea) stools 2-3x daily. I had her on Gentlease, & that did nothing for her has pains. I tried Gerber Soothe & that did nothing but turn her poop even greener. The Ped said to try Similac Sensitive & she has been throwing that up like crazy after each feed. She has terrible colic, for hours on end. I am using Colic Calm, Mylicon Gas drops, Probiotic drops, baby massage (of the belly & feet), bicycling her little legs, lots of tummy time, etc. She is also on Zantac 1.2 ml twice daily for reflux. After every meal, she is so difficult to get to relax, she is so uncomfortable 😩
Someone suggested I try lactose free formula or Similac Isomil (Soy)... I am losing my mind--- please help!Â