Allison, You have gotten TONS of great advice on things to try! For your sake I hope one of them works.. My little one went threw this at about the same time.. Like you I had milk, but she just wouldnt take the time to eat it.. We tried everything and nothing worked for us, and it was SOOOOO hard!!! I felt like i was starving my baby or something cuz she screamed sooo much... Everyone told me how my milk should be as much as she wanted, but i honestly dont think it was... Finally around 5mo we started rice ceral and that helped a bit. At her 6mo apt she had dropped to the 25th percentile for weight from 50th... I felt like a faliure. I gave her expressed milk that i had frozen in the first couple months and supplimented with formula and held on to those precious morning feedings a week ago. (independence day! lol) I finally accepted that she was weening herself and that it was okay... Some babies just do this. Our schedule finally ended up being: get up, breastfeed, have breakfast, play, sleep, try BF again, late meal, play then bottle and bed...
anyway, I guess my point is, Try everything you can, watch her weight, saver every moment that she does drink from you, seek sympathetc ears and arms when you feel bad, relax about it as much as you can knowing she's going to do what she wants- not what you want her to do (welcome to motherhood!! lol), and whatever happens, know you are the best mom that little girl could ever hope for!! Good Luck