Kids are different.
With dd#1, nightweaning was a miracle. She went from waking 4+ times a night to sleeping through.
With dd#2, nightweaning didn't help at all. If anything, our nights were worse--she was still waking up, but she was furious and couldn't get back to sleep. I finally wised up and started nursing her again, which made our nights much more peaceful.
I hate to say it, but there's no magic bullet. Some kids just keep waking no matter what you do! As a parent, all we can decide is how to respond to it.