I doubt it's that simple.
I think noxacusis treatment will have to be multi factorial involving many aspects including: hair cell repair (to dampen ATP leakage from OHCs), anti-inflammatory drugs that effect oxidative stress and vascular permeability (this should help some of that) and the body's own reversal of the Type 2 fiber sensitization, whether that's with (extended) time to normalize purine receptor responses or to down regulate the extra OHC to type 2 fiber connections -- if humans are like rodents in this regard (which I don't think anyone knows yet since that's a recent finding that
@serendipity1996 posted about).
Noxacusis frequently does improve so there must be some mechanism of desensitization of type 2 fibers after being sensitized but I don't think there is a set time frame, though it certainly doesn't look like "take a pill for a month and you are healed" because of how much desensitization is involved in recovery. If this helps with noxacusis, I predict there will be a lag between taking the drug and the re-sensitization of the fibers.