The best advice is to get back on your meds.
If I could ever get tone pots in any guitar to start adding gain after 10+ years I would get a patent on it and make tons of money hand over fist.
Personally, You have probably changed something - like an amp, or a cable, or a new stompbox, or installed new pickups...
No I haven't done anything to it. But eh... you wouldn't be interested in a one of a kind, gain adding, pot, would you ?