Here are my two cents for things you can try to reduce the level of tinnitus. Please keep in mind that, although this works extremely reliably for me, your results may vary.
First, stay as healthy and regular as you possibly can be. The more poor my diet is, the worse my tinnitus gets. And if I don't get enough sleep or exercise, my tinnitus gets worse.
I finds eating a lot of steamed, dark, leafy green vegetables (kale, collard greens and chard) and baked salmon help immensely. I eat oily foods in strict moderation and virtually never eat anything with cane sugar in it. Especially avoid fried foods.
I take bromelain (a natural anti-inflammatory derived from pineapple stems) and curcumin (an extract of the kitchen spice turmeric, also anti-inflammatory) daily. Bromelain should be taken on an empty stomach at least 1/2 hour before a meal.
For some, implementing all these suggestions might be too radical of a lifestyle change. But the rewards are worth it, and after awhile you won't miss eating sugar, for example, one bit.
I hope these suggestions help you. They give me dramatic relief. Again, YMMV.
Best wishes,
TW