I hate to even suggest them given what happened to me.. but have you thought about talking to the doctor about an anti-depressant? There comes a point where its better than the alternative.
Do you feel the sound has gotten louder or your perception of it has? Amitriptyline can do that unfortunately but so can many antidepressants, what works for one will not work for the other.
@SarahMLFlemmer You got this! Maybe try to cut back to decaf coffee. Regular coffee can make your tolerance for the sound less, cause It to be super loud, and induce panic attacks.
@SarahMLFlemmer just don't fall to far down the rabbit whole before reaching out for help. Ad's suck as much as they can help. It's the fine line these drugs play. It's hard to try another once you get burned :(