Learning to cope with severe tmj

I have pretty bad tmj from a dentist shaving all my top teeth to make a crown fit. Consequence of that now I have 2 displaced discs, constant muscle spasms, postural issues, body tremor.... I could go on and on. I have been doing splint therapy since April and I am no better I can't seem to stabilize ? My jaw just keeps biting all over the place and it drives me crazy. My facial muscles have basically atrophied I can't eat, I have become so depressed. I don't want to live like this and I am beginning to feel this will never stop. Any advice on relaxation tips or stress tips? I go to massage and I did a but of cranial sacral therapy to no help. I also go to physio and that isn't doing much.... We will be starting to work on my back issues though to try and stabilize that? Thank you

Learning to cope with severe tmj