No just did it cold turkey... he'd been feeding aroud 5.30/6am was going back to sleep & then stopped & decided it was wake up time, so I just decided to try & resettle until ds#1 woke & he went back to sleep at 6.30am that day & slept until 8am, so I thought OK if you can wait that long I'm not feeding early again.
If she only expects it when you go downstairs, how about staying in her room with quiet play, stories until the closer to the time