Spitting up breast milk

Sarah • 👼🏼 Jul 18’ 🌈💙 Nov 19’ 👼🏼 Mar 22’ 🌈💗Jan 23’

Help!!! My almost 12 weeker spits up almost half of his bottles of breast milk. Usually it is worse in the mornings. He is primarily bottle fed, we sit him up, and only use size 1 nipples. He doesn’t fuss about it, but he wants to turn around and eat again about an hour later and I am an under supplier + we are tired of being covered in spit up 😩