Sorry about that.
Interesting that it changed like that from getting better to worse again. May I ask what your acoustic trauma consisted of? If you want to talk about it, that is...
I'm in a somewhat manageable situation, but still sad every day since even if I have periods during the day when forget about my new (one month and a week) high pitched, sometimes a little oscillating, tinnitus that I managed to get on top of my previous hum and tone, I'm still reminded of it many times during the day.
Not to highjack the thread, but if anyone recognizes what happened to me I'd be happy to know more. Posted about it here, but no response yet:
Two-Second "Warped Chirp" in Ear While Listening to Music at Night — Then New High-Pitched Tinnitus
Really hope your sounds will ease out again and stay there! Hoping scientific research finds a cure for all this as soon as possible. Good news is there seems to be more focus on it than ever.