Kian does some really annoying things with his bottles...dunno if this is what ur tslking abt:
Kian sometimes cries like he's straving but then leaves his mouth slack around the teat as if he's not really interested (he lets all the milk run out the side of his mouth and sometimes 'flicks' the teat a bit but thats it). He also flings his head around, rubs his eyes, arches, wiggles, attempts to pull himself up to sitting etc and gardles with the milk thats dripped in his mouth....just generally expressing a wish to stop with the feeding. I've found this seems to happen if he's really tired. Its like hes too tired for being touched and making an effort to drink?! So if i lay him down away from me (he doesn't like being cuddled to sleep...he seems to prefer his space) and put his dummy in and stroke his head or SHHHHH him (both these techniques usually help him drift off) then he'll calm down and will then drink his bottle (or he'll drinft off and drink it in his sleep). If i keep trying to feed him while he's stressing he just gets worse and we end up with a full on cry-a-thon but he'll eventually have it when he's calm and half asleep.
Or annoying bottle habbit no 2: Kian started teething early and when his teeth r bothering him he likes to chew the teat on the bottle (along with anything else that goes near his mouth) which then seems to frustrate him coz he can't drink and chew at the same time. It goes like this...suck suck suck....chew chew chew...cry...i wiggle the bottle around and he sucks for a sec before going back to chewing then back to crying IYKWIM? i find this technique works...swapping the bottle for a dummy (or finger )and letting him chew on that for a few secs, then offering the bottle again. If he sucks for a second but goes back to chewing the teat i swap bottle for the dummy again and repeat until he drinks the bottle properly (it usually only take 2/3 dummy swaps) If however that doesn't work after a few swaps i give up, leave him chewing his dummy and try the bottle abt 5/10 mins later.
i think the key is not to let them get all worked up and don't try to force feed them.
maybe if nothing works u could try a different shapped teat/bottle.
Hope that makes sense x