Congratulations! That means you are loving that guitar
I have a guitar that has gone through that transition, and I don't feel it on the neck once it had a little time like that. Maybe I just quit noticing, but I think it kind of slicks up once the edges get feathered and your hand polishes it out. If you did want to do something to retard it and slick it up, I have read of some people french polishing some shellac on the exposed wood with good results. Some people are more reactive to nitro, so washing your hands before playing may slow the process. I am not saying you should wash before picking a guitar up... it seems kind of high-brow to me, but I figured I'd throw it out there as a possible contributing factor.