DD2 has been breasfeed and I am making the transistion to bottle feeding, she is 4 mnths next week. She is small 10 12 and on 2nd centile so think just has a little tummy. She is on a 3 hour EASY routine but usually only takes 3/4 ozs from a bottle - is this ok?! What can I do to get her to take more? Should I try to increase time between feeds or not worry about it??