Hi, Diane...i had the SAME issue with my daughter at 7 1/2 months old. (now 19 months old)...i was desperate for her to take a bottle instead of having to nurse all the time...what finally did it was a fluke thing that i tried...i waited until she was ready for her nap, and that's also when she would eat...i held off the nap an extra 10 minutes to make sure she was really tired, and i put on my husband's t-shirt...the one that he had slept in the night before to make sure it had his scent on it, and i sat there with the bottle, she didnt' want it at first, she did cry a little bit...and i just kept putting the bottle to her mouth..and she was just so tired and wanted to eat i think she just finally gave in and took the bottle...it was a miracle and a success..and no tough love needed.... i never had a problem giving her a bottle after that.
Good luck!!
Denise