The method I use is scary for those who don't have several years of experience. I have used it for more than 60 years and won't use any other. No increase in grain. It all can be done with the lights on.

Bleach and re-develop. You may bleach in what comes with sepia toner or make your own with ferricyanide and sodium thiosulfate.
Bleach until there is no image, or a very faint one.
Rinse well
Re-develop in your favorite developer. My choices are usually one of several pyrocatechin developers, but they are not necessary. Continue development until complete - in other words nothing more is happening.
Rinse, fix and wash as usual.

You can practice this with an underdeveloped print.