I strop 20 times of so on leather after I shave to help dry it, then I put a little mineral oil on it. Right before next shave I wipe the razor off and give it a full stropping.

I doubt you'd see any adverse effects from doing all of the stropping the day before, but I think for best results you should do it immediately before you shave. I'm sure even over a day the edge can start to rust microscopically which stropping immediately before the shave would take care of. But as I said, I don't think this would make ALL that of a difference, but maybe just a little.