one thing I have discovered lately...
you can't feed a baby that doesn't want to eat.
So it's not always possible to ensure they get all their calories in the day.
ds (15 weeks) fights most daytime feeds at the moment and I'm certainly not going to try and force him! It's a combination of sore gums from teething and general curiousity about everything (and I mean EVERYTHING) going on around him.
If he hasn't eaten enough in the day, he wakes in the night because he's hungry. Always finds it easier to eat then...
So if I decided to give him water or not feed him or something at the moment he would either scream the place down or starve.
Sometimes I think you just have to go with what they are trying to tell you they need, obv a routine worked for Gemy, and many others I'm sure, but a routine is defintely dependent on your lo being prepared to eat at the 'right' time - I think if you haven't experienced a baby refusing feeds this is hard to understand but it is totally beyond a parent's control, and quite upsetting...