Botox in masseter muscle fail. Recommendations?

I had over developed masseter muscles due to bruxism. I had botox which created moderate assymetry. Had more botox. I asked the dr to only the one side that was larger but he insisted on doing both. I still have assymetry and now one side (the larger side is painful to chew and overall sore) it's been two months since the last injections. Recommendations???