My son is 11 weeks old tomorrow and has always struggled to feed due to colic caused by lactose intolerance and also reflux. It dawned on us tonight that he is only able to drink 3oz at a time no matter how long he goes between feeds. It also looks like he wants to drink more but is physically unable, uncomfortable and distressed when he tries 
Can anyone offer any ideas as to why that might be please, maybe from similar experience?
We have a doctor's appointment next week for him but they've been less than great with him so far. I'm not convinced they'll take me seriously as they haven't the last two times I've taken him down for other conditions (fungal groin sores and his head flattening one side). They treat me like a panicky first time mum! I had to fight for cream to treat his fungal infection and they aren't fussed by his flat head at all 
Thanks in advance.