Hearing loss can not be healed but the other two types always go away after good sleep.
If you got tinnitus it is good to figure out if there is a cause that can be taken away. Sometimes you are in luck and a good deep sleep can improve things.
In other words, it seems the other two types of tinnitus are sensitive to the amount of reactive oxygen species (ROS).
When you sleep, the ROS are suppressed by glutathione. Then, you feel fresh and rested when you wake up.
When you go through your day, the amount of ROS slowly but steadily increases until you sleep and allow glutathione to do its job again. The cycle repeats.
Given that your tinnitus seems to depend on ROS, I would suggest to experiment with NAC 600 mg and see whether it improves the symptoms. NAC is a glutathione precursor and causes the immediate suppression of ROS.
If there is a correlation then the condition can be treated and improved.
There are some public materials by people like Elliot Overton and Sten Ekberg. As far as I know, they do general practices combined with private consulting as well. You can try to reach them remotely or physically by visiting their clinics.
My friend had a tinnitus for a while and later found out it's due to hearing problems on both ears. He then got hearing aids and the tinnitus went away.
So it looks like, _some_ form of hearing loss induced tinnitus can be treated.
It's been a few years now. I'm lucky since the noise in my ear is not too strong and often I don't think about it unless I'm alone in silence, but it somewhat sad to think of never being able to hear silence again.