Am I overreacting?

For context, I am 21 and a daycare teacher currently on maternity leave and my husband is 21 and grew up in a large family where babies were constantly present. So we’ve both had experience caring for babies. I’ve been staying at home with our newborn so I’ve been getting a hang of her specific routine and queues. My husband is very involved when he is home, but he is gone majority of the day so I spend the most time with her. Lately our 2mo daughter has been drinking about 4-5 oz of milk. For a few nights she drank 6oz but now has cut back a bit so I went back to 4 1/2 for each feeding and giving her more if she seemed to need it. My husband for some reason isn’t accepting the fact that she west back to drinking 4-5oz of milk. I don’t know if he’s worried she’s going backwards or what but he will feed her to the point where she will spit up. When she does spit up he says “she just threw everything up to I need to feed her more”. He doesn’t force it as much anymore but he fills the bottle up to 6oz every time and there’s always an ounce or two leftover 🥲 I have low milk supply and have to bottle feed my breastmilk to my daughter because she doesn’t latch. The fact that he’s wasting my already scarce supply pisses me off too… I’ve brought all of this up to him and he acts like I’m starving our child. At this point I feel like I know her signals better than he does because I’m around her more though. Do yall think I’m being silly about this? I’m like fuming over it