Hugs
That sounds very hard to deal with.
Breath. He's not being a silly sausage on purpose. He's a bit young to do that yet
how often is he feeding? Maybe try interesting him in a bottle 5mins earlier?
my ds2 goes from fine to over hungry and his behaviour turns to custard within a few mins and he's always been that way. Then he'll have a tiny amount and gets back to it.

Is the teat the right size? my dd through a bottle the other night cause the teat was wrong size- couldn't get enough milk (little monkey)