I did try the df at midnight when Claire was still waking for the 3:30-4:00am feed. She was doing so well, only waking then to eat and then right back down. I thought I could do the df later (previously at 10:15-10:30) and she wouldn't need that early am feed. The first night it worked so I did it again. The second night was a different story. She woke fully when I was tryng to df her and I couldn't get her back to sleep. When I did, she woke every hour after that till morning. The next night I did the df at midnight again, thinking the night before was a fluke. She ate, went back to sleep but then woke 3 times between 12:30 and 7. I kept trying for a week when it dawned on me (duh) to go back to an early dream feed. When I moved it back to 10:30, she stopped waking and slept fine, except that she would stir around midnight, cry out and then go back to sleep. I did wake 2 sleep for that and it ended. So, long story short, I wouldn't do a df later than 10:30 or 11:00.