That's all true. Lot's of people load in batches. That is, when they go to "reload" they are actually only doing one single operation to a "pile" of brass in one evening. Could be 50; could be 5000. In this mode of processing, 4 or 5 piles might be working their way through the entire process, each at a different stage. A particular pile might take more than a month to progress from 'tumbled' to 'ready to fire', but one of the piles is always being finished right before every shooting outing.
So 'yes' you can do an operation to your brass and let it sit for a LONG time before you'll need to worry.