Hey there...My lo is just 9 months tomorrow. We stopped the dream feed when she started to wake for it. That's what Tracy suggests, cuz it's more out of habit then hunger...if it's erratic wakings, it's hunger I think. She suggests that this could occur at 7 months, assuming you start solids at 6 months I guess.
We EBF as well, but I started to introduce bottle for her dream feeds so that it wasn't about me or feeding off me, and then I just stopped doing it. I think I did w2S since she was pretty regular. It worked well for us. Much better than PU/PD. Definitely the more food you put in her will contribute to those diapers and night changes, if she insists on it.
Good luck!
Leanne