7 week old

Ehh ladies I’m a FtM and I need major help!! First let me begin with he was put on a low dose Pepcid for acid reflux. I have also been hearing his tummy gurgling sometimes and seems as though he’s gassy but screams! Everytime he tries to pass gas or needs to. He only eats 4 oz every 4 hours. And he’ll! Forget about sleeping theu the night itsonly 4 hours if I get lucky. Can any mommy’s please give me advice as to maybe what I’m doing wrong or and suggestions