Sorry for the unsolicited advice, but please just ignore what I'm about to say if you already know this stuff. Firstly, I would suggest reading the website of the American Tinnitus Association (ata dot org) very thoroughly and joining them to get their newsletter if you haven't already. They provide lots of good, credible info about managing tinnitus. One treatment that people do (or at least they used to back when I was researching tinnitus) is Tinnitus Retraining Therapy (TRT) to help them to habituate to their tinnitus. There are also medications that are listed on the ATA's website.
As a very, VERY last resort, I would suggest taking a long-acting benzo. I would normally NEVER recommend taking a benzo on a daily basis because they screw up your gaba receptors and going off of them is HELL and can take 6 months to a YEAR or even LONGER - depending on how long you take them and at what dose. And you might NEVER fully recover from them. But with that being said, benzos reduce tinnitus and taking them beats catching the bus. But again, research all your options VERY thoroughly - including OTHER MEDS. And I would NOT take benzos until you have exhausted ALL of your treatment options for tinnitus.
If you're wondering about me, I'm fortunate in that I naturally habituated to my tinnitus and that's not why I'm here.
Anyway, sorry again for the unsolicited advice! Just thought I would write this message in case it's of help to anyone.