Squalling, please help

Mariah • Nerd. MCU <3
So I have a two mo. Old. I am breastfeeding and pumping. Well I was mainly pumping and feeding him 3-4oz usually three. He started squalling uncontrollably when I took the bottle away. So I started breastfeeding him so he could get how much he wants... Well he's sucking both boobs dry and still crying. Not like regular crying I mean he has a FIT!!! he is drinking 5-6oz each feeding! Then, he spits a lot of it back up. I already cut dairy out. I don't eat much spicy stuff. He's not getting any formula. Idk what to do!!!! He just keeps crying! 😩😩😩😩 HELP!!!