Cold turkey or water? DS3 is due in a matter of weeks and its one if the reasons I need to night wean. The other is so he eats more in the day as most ends up on the floor or being full of milk from the night. I dream feed him about 10pm and it hasn't helped.
He's never slept through but hey ho you cant pick a good sleeper you can just help improve the sleep they do have and maybe extend it slightly!