My 4 month old was drinking 5 8oz bottles in 24 hours and doing fine and then started to wake in the night and would only settle with another feed of 8oz. Spoke to the hv who suggested hungry baby formula as he was draining all bottles so gave it a go and he now has his last feed at 10pm and sleeps till 7am so all good. What has worried me is he is still draining 8oz bottles at every feed even though it is the hungry baby formula!!!!and i expected him to be taking less of it as its more filling but am i wrong? So far he seems quite satisfied but when he wants more shall i just up it to 9oz or is this too much!!. He currently weighs 15lb 10 so he is not huge either. Am i overfeeding him?