I know there are alot of postings on this thread but I have to give my 2cents...

At my ped, who are very proBF, they say on some of the first literature handouts they give when you have a newborn that they recommend you read many books on infants and breastfeeding but that they strongly disagreee with the Babywise books and ask that you do not read them because they say that babies who nurse should not be on a strict schedule.

That said I have to agree with other posters who say do what feels right to you and your baby.