My LO didn't have a dreamfeed, it was the nightfeed we weaned this way. She woke at about the same time every night for it, when we got down to 2oz she slept through one night, the next night she woke at her normal time but we only offered water. She wasn't happy but we got her back to sleep, she woke again the next night and we got her back a bit quicker and that was it really, she stopped waking and expecting a feed.
Laura