C.B.
Giving food at night after the baby is heavy enough to make it through the night (and I do not recall what that weight is but for most babies at 6-7 mos) actually activates the stomach and intestines and keeps her body busy which may be what is waking her up. At this point you can let her cry it out or use the Ferber method. Ferber is letting her cry longer and longer periods of time each night, so go in after 5 minutes first night first time, then wait 10 minutes first night second time, then 15, etc. On the second night let her cry 10 minutes first time, then 15 then 20, etc. Crying it out all at once is faster, but Ferber seems kinder. I used Cry-it-out with my first and Ferber with the 2nd. No feeding with either method. Stick with it for a week for crying it out or about 3 weeks with Ferber and you will have restful nights again.