@derpytia
I don't know that there's much I can say to "help," but I do have a few suggestions if you're not already doing these things:
1. Talk to your psychiatrist about medication. It might not be the right option for you, but it might be worth exploring. As others have said, it can help a lot when you're in an especially bad/desperate place.
2. Consider getting a professional hearing test. The free online tests are not reliable, some frequencies cannot even be emitted by computer speakers well. If you get a professional test as a bench mark every now and again then you can see how things are either really changing, or how they're staying the same. For me, at least, this helped curb my panic and ground me just a little.
3. Try to give yourself a little credit for having habituated before. Yes, it's been 1.5 years, but it took me almost that long to habituate the first time, so you're way ahead of the game compared to many. From where I'm standing, you're this powerful, strong, resilient person. I'm sure it doesn't feel that way at all, but for what it's worth, I'm pulling for you.
If you just need to rant and say everything is awful, I totally understand, I think we all do understand that need. We're all here to hold that for you. If there's anything we can do to help, let us know.