I grind (or shave with clippers from Dollar Tree, they don’t slide at weird angles like more expensive clippers I’ve tried) 360 degrees around the quick until there’s only a very thin nail sheath left around the quick.
This provides some protection from pressure from impact with the ground, but not a full degree of protection so the increased degree of pressure upon impact will help to recede the quick, and less protection also allows more air exchange which will allow the end of the quick to dry and shrivel as well. This will leave a “dead”, painless layer that you can remove painlessly. This layer will be a different color from the “live” quick, that has blood flow and nerve activity.
I haven’t observed any pain or favoring of feet with this technique.
Now that you have a quicker “dying” of the quick, you can shave off a thin layer more frequently and repeat the process, shaving away another layer of nail, again semi-exposing the quick until you get the desired nail length and then go back to normal grinding or clipping to maintain length.