Slept for 9 hours!! tinnitus very mild

So I usually sleep 5 to 6 hours per day. Yesterday I've read that dimenhydrinate helped someone to reduce their tinnitus, so I took it before sleep. Half a tablet. Those are tablets for motion sickness (I never had that, or dizziness or vertigo...). I also took one drop of CBD 20% oil (sublingual), but I take those for 5 days already and was no effect - till today. I did wake up once in the middle of the night, my tinnitus was a baseline, like always. I immediately fell back asleep and wake up at 9.00 a.m. This week I'm at home- I took a leave of absence from work because I have some work to do around the house and I still have a few days of last year's leave left.

But oh boy, tinnitus is so mild, that I could have lived with it with no trouble at all. I know it probably has nothing to do with that antihistamine but just with the sleep duration.

What now? I can't take antihistamine for a long term, because long term blocking of histamine binding to its receptors can damage these nerves.

Also my psychiatrist gave me quetiapine for sleep (low dose), but I didn't take it. Those are pills for schizophrenia and I've read some horror stories about worsening tinnitus even when taken in small doses.

Sleep is an important thing in tinnitus and I think they should do more research into what exactly happens when and in which part of sleep tinnitus starts to improve. Antidepressants and sleeping pills don't help because they interfere too much with the functioning of the brain receptors and can make tinnitus worse, even if the person is sleeping a lot.

So what is the solution??