Weaning breastfeeding

My little girl is quickly approaching one and I have been very fortunate to still be exclusively breastfeeding. But the past week or 2 it has become extremely painful on my left side. I’ve never had any issues up until this point. I’m about done with it because it is toe curling painful, but she will NOT take a bottle. Hasn’t since 3 months old, I’m a SAHM so it was never really an issue. Is there any suggestions to stop doing it? I’ve been trying giving her a sippy cup of milk since bottles are no goes but she just screams and cries and wants my boob. Idk what to do. I only feed her once in the morning and then at night she’ll take a sippy cup throughout the day but like I said its so painful I can’t do it anymore. Any advice would be helpful!