Emma, I've found with Stephen that sometimes he's woken up from "day" sleeps ie after his 5am feed he wakes about 8:30 / 9:30 ish or his other day sleeps and he cries to be picked up but he doesn't necessarily wants his feed straight away...when I've offerred it he's only taken 50 - 80ml and quite reluctantly and will end up pulling away. If I stretch it out a bit, change his nappy, have a cuddle and a play till he gets grizzly and then give him his feed he takes a nice big feed and still has a little play after before bed. So sometimes he wants sleep, play, feed, play, sleep rather than sleep, feed, play, sleep. Don't know if that will increase what she drinks. In any case the amounts on the formula can are just guides. It doesn't really matter if she's having lots of wet nappies and enough poos and putting on weight. But that's just a thought.