Any recommendations for masseter botox injections for TMJ/tinnitus?

Been experiencing tinnitus for about 8 months now and have run the gamut of seeing audiologists and ents trying to figure out what could possibly help my situation. One thing I haven't tried is botox injections in my masseter muscles since I do grind at night. I've been sleeping in an otc bite guard for a few months but haven't seen too many results. I'd like to see someone that specifically has experience with tinnitus if at all possible as opposed to someone doing purely cosmetic injections. Any help is appreciated.