After 5 years of Tinnitus-hell I was put on yet another benzo and my symptoms were _gone_. It lasted only a number of months, though and when I stopped taking the new benzo ... it all came back.
I came to the diagnosis of benzo-dependency myself and found a psychiatrist who agreed to assist in a 6-month withdrawal with a gradual taper. After each step my tinnitus came back a bit for a few days and then dropped again. After a number of iterations it became what is known as "baseline", i.e. a background tinnitus I can live with.
In recent months I started taking Magnesium supplements in the form of citrates and Taurine. I then found this on reddit: https://www.reddit.com/r/tinnitus/comments/znyuyj/partial_su... The top comment by kenzocarj is my current working model for dealing with Tinnitus. I'd like to try L-Theanine but it's illegal in my country - you can buy it in a form that has added glutamine which worsens my T. I'm now drinking matcha tea as a source of L-Theanine.
Hope this helps.