DS has never needed much sleep and woke hourly for longer than I like to remember. Like Dude, we used to do "we can talk about it in the morning; it's sleepy-time now". You don't have to be unkind, but you do have to be boring, IMO.
FWIW though I dealt with lots of people saying we should ignore him, leave him to cry, etc, to my mind the early hard time has already paid for itself: he quickly became a child who sleeps well, has no reluctance to go to bed when tired, doesn't worry if he wakes at night, entertains himself when he wakes three hours earlier than anyone else, does not suffer from insomnia etc. I think as with so much else, if you possibly can it's worth keeping the long-term goals in mind.
