My little one is 14 weeks on Wednesday, and we do bottles anything from 5 to 8oz. I’m exclusively pumping so it’s breastmilk he’s having, and I do this on demand. He will normally have his last feed of about 6oz at 9pm and will sleep till 5/6am but some nights he may wake for about 3oz top up.
My 3 month old drinks 6oz bottle every 4hrs and then at night drink 4bottles of 6oz before bed around 7.30 and then wakes up at 3.30-4ish
All depends if the milk is filling enough and how much they bring back up my 9 week old went from normal powder to anti reflux to now hungry baby she has one bottle 6oz before bed 630/7pm and wakes up for her next bottle at 530am
My 14 week old is 6oz every 3 hours