If you want to get this book, please do a thorough amount of research. My God child is 9 months old and only 14 lbs because his parents followed this book. They did not do it to extremes, it is just not good advice. The American Academy of Pediatrics states that infants should not be put on schedules. Some children may be fine, but others are put at risk for dehydration, malnutrition, and a general failure to thrive. I recommend reading -Caring for Your Baby and Young Child (The AAP published book). My 3 month old daughter is doing wonderfully.