I did read his book and thought it was a healthy and gentle way to night wean. I was ready to try this when DD was about 13 mos or so since night nursing had increased and was driving me mad.
I'm afraid I can't be much help though-I got totally lucky, the first night I was ready to cut shorter the middle of the night nursing she never woke up and we've been sleeping thru the night since
It's like she knew I read it and didn't want the trauma!
BUT...just this week she started to wake at 3am for the last 4 nights-she's now 16 mos. I would tell her that milk is for morning and hold her but did not give in. She cried and pulled at my shirt but finally fell asleep after about a half hr. I offered her a sippy cup with water which she denied so I knew she wasn't really that thirsty.
Anyway, she didn't wake last night so maybe (knock on wood) it worked.