Perhaps you could clean or oil the inside of the pots first.
I don't use spray contact cleaner because it can come into contact with guitar's finish. Not good.
A light oil can be applied directly inside the pot, with the control
cavity cover removed.
Try that, moving the knob back & forth, if pots are scratchy.
Otherwise, replacing is ... removing knobs, removing pots, de-soldering, re-soldering.