Push-Pull pot to completely roll off tone

Hey everyone. I'm trying to wrap my head around this. I'm wanting to put a push-pull pot on my tone knob so that when it's down the knob works as normal, but when it's pulled up it instantly sets the tone to 0 (fully rolled off).

The reason is an e-bow works the best on the neck pickup with the tone fully rolled off. For a couple songs live i have to quickly pick up and do those changes for the chorus then switch back after.

Thanks!