I read that book too while pregnant with my first. I thought it sounded logical and good. Thankfully when I told a friend about the book, she told me that she had tried it and it didn't work and to forget about it! I'm glad she told me that. Turns out that I did the complete opposite -- as it was what just seemed right and good once I became an actual mother. Now I look at that book as being one of the most horrible books that there is in misleading poor mothers and parents.