Once your hearing recovered your brain started the process of unwiring the tinnitus signal the gingko most likely did nothing.yes it was idiopathic. I was sitting on my chair 4-5 hours after an airplane ride and my left ear just went KAPUT and lost 50% of my hearing. Crazy hyperacusis followed and after steroid treatment, T began to surface.
I started getting treatment on the 4th or 5th day. The steroids I do believe helped my hearing loss, but did nothing for the T. T going away I credit to Gingko and Vincepotene and the intial hyperbaric therapy.
I would still do it and do it with discipline.
Please give the hyperbaric and steroid the credit for restoring hearing as the reason your tinnitus reduced