Have you considered asking a psychiatrist for a Xanax prescription? You can't use it more than a few times a month, but it will give you a little vacation from tinnitus - by that I mean for me at least, it literally cuts the volume (I don't mean just makes you not care, I mean literally cuts the volume), and for anything that remains you kinda just don't care about it.
The downside is if you use it too frequently you will change your brain chemistry and the tinnitus can get worse, but you would need to do it more than 1x per week.
Used judiciously, it can be a nice respite, especially since you understandably seem distraught. I find planning tinnitus vacations gives me back some feeling of control.
I think whether it is natural healing or some treatment, we will reach a point of diminished or completely mitigated tinnitus.