DS, 4.5 mths, seems to have hit a hellish growth spurt. Know they are quite common at this age. He is waking 6/7 times a night after previously only waking twice and sometimes only once. My attitude has always been to feed him when he wakes rather than to try anything else as a) he always latches on and feeds and b) goes straight back down again afterwards. My questions are 1) Surely all this night feeding just increases my night supply? As far as I can tell if he feeds at a certain time then the next day or so my breasts are fuller THEN rather than at any other time. They don't seem fuller during the day at the moment. 2) I feed him at least 2 hrly in the day, I can't actually get him to feed anymore frequently so how do I get more into him during the day to stop him waking so much at night? 3) Is this a crazy question: when will it end? Basically just interested in understanding science of it as blind faith is failing me right now! Especially as have 2 yr DD to deal with during day as well. Also, am due to go get back to work in 8 weeks. How does a growth spurt work when your baby is formula fed? Surely you can't just jam a botttle in his mouth every time he wakes in night?