You want to avoid doing things that cause pain, which is caused by the scar tissue pressing against nerves, because if the nerves get inflamed, things will get worse. Fortunately, scar tissue does get reduced over time, so things will probably get a better over the next year or so if you let it happen.
If there is a particular type of grip that you can use without pain, I would either have a new riser made for your bow using that grip, or else have your old grip re-worked if possible.