I have a one month old that drinks 35-40oz of milk a night then after each feeding spits up what to do?

My son was one month old on the 7th of May and eats 35-40oz a night then spits up alot after each feeding then wants more. Should i put a little of cereal in his milk to satisfy him through the night he isn't bad during the day it is mostly at night i have even tried warming his formula up some so it is warmer than usual and that didn't help! What should i do to satisfy him i have tryed other alternatives like maybe he needed a pamper change, or just wante to be close to me so he can hear my heart beat, took him for a ride in the car, even felt his tummy cause maybe he was fussy cause he was too full and that wasn't it even gave him a pacifier that didn't help either even rapped him up in another blanket that wasn't it even gave him a bath cause maybe he felt dirty and that wasn't it but then gave him another 4oz and he fell right back to sleep so how can i satisfy him his pediatrician said this amount of milk was norm but i have three other kids and they didn't eat this much.