It took me a long while to figure out that I can make my tinnitus better by pushing by jaw backwards (using my hands).

As I understood it, the ear and the jaw muscle are delicately close. "Pressure" on the ear can somehow cause the nerves to send such signals.

I got prescribed some special training to relax the muscles in the neck and jaw area; still need to start it.

I read that being able to modulate the tinnitus to also be quieter somehow is a good indicator of being able to improve it with therapy.