Formula recommendation help me!

Brittany • Married💍 1 amazing little girl 7-9-19🤱🏽

Any moms have a recommendation for my little girl, was originally on similac neosure optigrow for premies and absolutely NEVER spit up, dr took her off of it because she’s doing phenomenal and said it’s hard on their kidneys if they no longer need it and placed her on enfamil neropro... she’s been on it two days and projectile vomits half her bottle and her poops are absolutely fowl smelling... I’ve put a call into dr but no word. She’s 4 weeks btw... but anyone experience this? Any help would be great!