The question about hypnotherapy has come up a few times recently, and being a hypnotherapist I thought you might want to listen to an episode of a podcast with a lady called Deborah Sims who specialised with tinnitus, you can find it here: hypnosis-weekly.com/episode...
There are other papers here that might answer some the questions being asked on this forum.
I'd like to know your thoughts!
1. tinnitusjournal.com/article...
2. tandfonline.com/doi/abs/10....
3. tandfonline.com/doi/abs/10....
Hypnosis also gets covered in this review.....