N.B.
Oh, you just brought back memories of my daughter when she was 5-months. She would not take a bottle. I tried every bottle out there. My pediatrician finally told me(I looked horrible from not being out for mom time), that I needed to take a day and sit with her in the rocker with the bottle. I was not to breastfeed her but to give her the bottle. If she refused, keep trying. It took an entire day. She would cry herself to sleep in my arms, wake up, refuse the bottle, cry herself to sleep, etc. At about 4pm(yes, I remember and it was 5 years ago), she finally took the bottle. I felt horrible during the time, but I kept rocking her, singing to her, talking to her, and offering her food in a bottle. The following night, my husband paid for a babysitter, and I went out with friends for the first time since she was born. From that point on, she was fine with breastfeeding AND the bottle.
I hope that helps. Good luck.
N.