Help with last bottle ofmthe day

[Chucklecheeks]

I have a seven week old DS who sleeps fab and is lovely during the day. We had a few issues with him concerning colic which turned out to be severe reflux but he is one on medication and is like a different baby from the screaming ball of pain he was last week.
What I can't seem to crack is the last bottle of the day before he goes to bed at 7. He reallystruggles with it, he wiolbtake an ounce or so and then will struggle and choke in the rest. He is on baby gaviscon so is on the second teat and copes well the rest of the day. However he needs the first teat at this time but that does not let the milk through and he tires easily and does not have enough milk.
Is he simply over tired, is it the reflux? I have no idea. H is not in pain like he was last week, just that he cant cope with the speed of the milk flow.
Has anyone got any ideas on bow I can make this easier for him?
Thanks in advance.

My baby was the same at the age, just didnt seem interested in taking his last bottle when i was trying to get him nice and full before sleep, that was the problem though, i was waiting too late and he was too tired, i did it half and hour to an hour earlier and he took it, also made it a little warmer than what i was doing before.