Spit up....help

My son spits up a lot!! I mean a lot!! We use 2-3 burp cloths every feeding and almost always have to change everyone’s clothes 😵

He is breast feed and supplementing with Similac Organic A2 formula 2 bottles per day.

My son had a milk protein allergy we used Nutramigen formula for him and now he drinks a2 milk that is why we started our newborn on a2 formula.

The doctor suggested gentle ease formula but I’ve see. Bad reviews about it

I also don’t want to switch formulas a bunch of times

Any suggestions? What is everyone using?