There's absolutely nothing you can do about tinnitus except adjust to it. You really do just have to relax and accept it, and it essentially fades into the background. That's literally the best treatment available.
The entire reason this comment chain exists is that someone has built a better treatment than just adjusting to it.
It's really one of the most true things about tinnitus. It takes a while to put your mind in order to accept it, but once you're done, the problem goes away (but tinnitus never does).