At the beginning mine was stable hiss. Then it started morphing into a ring throughout the day until bedtime. Then I got 3298463298462 more sounds and now it is hell on earth. But basically it is quieter in the mornings.
No. My tinnitus is the polar opposite of yours; loudest in the mornings, but settles to becomes milder throughout the day (as long as it isn't subjected to any loud noise exposure).