Or, just play softer

There is no reason that a decent player (which you are!) can't do a fade out without touching any knobs. It's the same thing with slap tone, and some guys needing to change tone for that. There again, IMO and IME, is no reason that (assuming a certain skill level) a player can't get virtually any volume level, fade, tone, punch, burp, etc. out of a decent instrument and rig without ever touching a knob after the first downbeat by just using dynamics and hand position. IMO!
The only thing I ever touch during a gig is the neck volume control, which on rare occasion, I dial back 10% to add a bit more mid punch and reduce the deep low end for a solo passage, or for particularly dense fingerstyle playing, and even there, I can get 90% to that by just digging in at the bridge.
Sometimes, we all get a bit tied up in our shorts over this sort of minutia IMO.
That being said, I think the person who raised the dual volume issue above was talking about turning the volume down between tunes. A mute botton works perfectly for that, although I've never had an issue with just dialing down the two V controls and then diming them back up when the next tune comes around in a 'show type' situation.