My baby is a month older than your's. She detests bottles.
At just under six months DH had her for three full days while I was on a course. We found that when she was hungry enough she would take a few ounces, but nowhere near what I imagine she gets off me (we are talking she had about 3oz over 8 hours each day, whereas the formula cartons indicate that babies that age are usually on about 7oz 6 times a day?).
She survived, but was very pleased to see me on my arrival home!
Out of the bottles, He had most success with a Breastflow bottle (amazon) as recommended by SIL. Less success with Medela Calma and mediocre success with an Aveda bottle.
We also (on day 2) got a Doidy cup from John Lewis (only place in driving distance which stocked them!) which although slow/messy, worked much better. She drank water and milk from it, and still has her water from it.
We also used a tommee tippee sippy cup (the cheap ones where you tip it up and water falls out of the holes) for water - the cups where you have to suck just were not working for her (she didn't suck).
She also, on the days he had her, demolished those pouches of food you can get - she doesn't seem to be at all bothered for food now I am back with her all the time, she just plays around with it and eats a little bit (which is fine). She doesn't really like bland things so cereal, baby rice etc is all too boring. Banana, pouch of pork and apple casserole (mashed, says its for 7m+ on the pack) went down a storm, apparently.
She no longer likes my loving prepared bland vegetable purees though!!
My HV suggested I start weaning a bit early, due to the course. Have you spoken to your HV?
Make sure you express too to keep your supply up and for comfort (I expressed mid morning and at lunch each day)
Sorry for length