Hi all. Sorry if this is a long post but I'm tearing my hair out and hoping someone can help.
My DS is 11+3, he's been on formula since he was a few days old, I had a fairly traumatic birth and after 4 days in hospital where he couldn't breastfeed (my milk never came in) we put him on formula.
He always took his bottles beautifully, no fuss, burped easily, and from about 5 weeks was sleeping through the night. He's been on 6oz bottles for about 3 weeks now, but suddenly the last couple of weeks it's such a fight to get him to drink. He'll have the first 3oz no bother, then start fussing so we burp him then he completely refuses the other 3oz. He'll throw his head about, scream and shout and push the bottle away. He also won't nap through the day (a couple of 20 min sleeps) which I know isn't helping as sometimes he's too tired to drink. He's now waking up at night again a couple of times because he's hungry because he isn't getting enough milk through the day. I initially put the entire issue down to tiredness as even in the last week he still took his first bottle of the day with no problem.
Suddenly this morning I've only managed to get 2oz into him at his 8am bottle and now I'm really worried there's an underlying problem. The minute I take the bottle out of his mouth he stops crying which makes me think it isn't colic or a sore belly as surely he'd still be crying?
I was also about to start a proper nap routine today but now I'm worried it's also going to get him into a state if he isn't full he won't nap?
Please help a worried stressed FTM, is it worth trying a different formula? We upped the teat flow about a month ago and he was fine with it.