Hi there,
First thing, how familiar are you with Tracy's techniques? Do you have any of her books, particularly the newest one? If not, then take the time to go through the Problem Solvings book (newest one). It's available at the library, bookstore etc.
How does your little one fall asleep at the beginning of the night sleep? Is it with a bottle or independent? If he's bottle feeding to sleep.. that's the first place you need to start. He may have associated the bottle with falling asleep. Don't let him fall asleep anymore on the bottle, make sure he is going into his bed, awake.
I'll check back for your response..