It worked great for my now 4 year old - last feed at 6:30ish, then feed at 10pm. Started at about 10weeks, kept doing until 12+ months? At first I actually had to wake her (strip her down etc) then after a week shes do it automatically - lights left low, little talking. She'd then sleep through to 4am ish until she started sleeping through till 7am.

Give it a whirl for a week or so and see how it goes. Never worked for my sisters kids - she couldn't wake em enough for it to work.