I must disagree with the comment of
"But how was I to know he was hungry...babwise never once discusses reading your baby's cues, only "mom, not baby, decides when nap begins, and mom, not baby, decides when nap ends."
I just re-read the book being very critical of it to pick up anything controversial and it stated in there several times that you need to read your baby's cues.
Also that there will be times they are not in their normal routine because they need more food, comfort, are teething or going through a growth spurt, etc. Chapters 1-6 deal entirely with feeding and I had a very big baby boy and he needed lots of good milk. I also would feed him when he was hungry, but I fed him until he was full and he got on his own routine. I will state it could have been easier for me because he was a bigger baby (9 lbs 14 oz) that he could eat better initially in the first few weeks than smaller babies perhaps. But there is NOT this "schedule" that they proport like the hyperscheduling advocates (they are out there - only feed your baby every 4 hours NO MATTER WHAT - how ridiculous! How can a baby a week old only get fed every 4 hours on the dot). The BW authors state that you can use the clock as a guide - I believe after 2 weeks and beyond - but only because you are helping yourself to know - oh yea - he ate at such-and-such-a-time and is probably going to be hungry about now. Parent Directed Feeding is what they call it. You look at baby, he is giving you hunger cues, you feed him! How simple! He gave you the cue - you used your parental assessment to assess he is hungry! The book mentions this at least twice!
Also to some of the other comments - it does not say that your baby should be sleeping through the night before 3 months (I think it says 8-12+ weeks). I am not sure where these people are getting that your baby should be sleeping through the night without nursing/bottle at 2 weeks, 1 mo., etc. The authors in no way state this in Babywse.