Although I do not have your symptoms or even heard of TMJ before (had to look it up), I developed a clicky jaw, which was uncomfortable when eating, singing etc. I consulted my chiropractor, who contacted my dentist, who made a mouth guard to wear on my bottom teeth at night. Not glamourous and I couldn't bear it at first, but I persevered and it has resolved the problem. The clicky jaw was caused by misalignment of my teeth due to previous dental treatment (not by my present dentist). I wonder whether this would help you