Top positive review
Try it only if you can measure how much your baby is eating during the day.
Reviewed in the United States on November 25, 2017
This book was a great guide to sleep training. It was a happy medium between coddling (my preference) and the aggressive Ferber method (my husband's preference). We actually started sleep training late - at about 3 months when I went back to work. And we never ended up successfully going 4 hours between feeds. 3 hours seemed to be our little girl's max and I didn't want stretch it any further than that. That said, within a week she was doing 8-10 hour stretches, and then when we upped her to 6oz bottles around 4 months she started going the full 12 hours. There were a few takeaways that I found really valuable. 1) setting a feeding/nap/bedtime routine 2) making sure she was getting enough milk during the day sustain her all night. For my little girl that's 30oz - 6oz every 3 hours from 7AM to 7PM. It all seems obvious to me now, but as a new mom I found the advice to be rather enlightening. :)
The one caveat is that I am not sure how effective this would be for an exclusively breast fed baby. I breast feed in the morning and then pump to supply the other 4 feeds, including pumping around 8PM and 11PM after she has gone to bed. In other words, I do not produce 30oz between 7AM - 7PM. However, because I pump a day+ in advance I can feed her on that schedule. If I am traveling and am not giving bottles, I DO NOT follow this schedule and let her wake me up to nurse whenever she wants. At the end of the day, the baby's tummy is more important than the mommy's rest.
In short, I would treat this book as GUIDE and not as GOSPEL. Read it, try it, but ultimately do what works best for you and your baby.