DS is 19 weeks, bottle fed on Neocate LCP and seems to go through phases where he just isn't interested. He's on 4 hour EASY (well, as close to EASY as we can get at the moment but often EASASAE or similar..) he's a big boy, 16.5lbs 3 weeks ago and had been taking a good 6/7oz per feed, but last couple of days he's taken only 3 or 4oz for at least 2 of his daytime bottles. Yesterday he had 6oz for his 3am night feed, then 3oz at 7am, 5oz at 10.30 (he seemed hungry and as he'd had so little at 7am I fed him early) 3oz at 2.30pm and 5oz at 6.15pm. He's messing around a lot when he feeds too, with lots of sucking noises.
He's definitely feeding better at night (no messing), past 2 nights his 2 night feeds he's taken a full 6oz each time, just seems to be in the day he's not keen. He went through a phase like this a couple of weeks ago then was back up to normal feeds again for a while, and now starting again.
I am wondering whether he's teething as he's gone very chompy on everything (including my chin this morning!) and drooling loads. He'll often double over and bite his fist really hard at times with a grunt which looks and sounds to me like discomfort. I've tried calpol and I think it makes a little bit of a difference but hard to be sure. Teething powders have done nothing (I've tried Weleda and a liquid one called Camilia - he can't have the others as they contain lactose and he's CMPI)
We use MAM anti colic bottles with size 2 teats. I had also wondered if the teat was too slow but then wouldn't it still be a problem for the night feeds? I tried going up to size 3 but he just coughed and spluttered and milk went everywhere.
I doubt he's going to waste away but I worry he won't be getting enough nutrients. Yesterday he had 28oz in 24hours, according to a calculation I read somewhere it said they need around 2.5oz per lb of bodyweight so if I guess he's around 17lbs now he should be having between 34 and 42oz per day so 6-7oz every 4 hours.
Any ideas?