Where's the one layer option? I just change mine every other day. Remove all floor items, dump the shelf pan, put chins in the chin proof room, roll the fleece up and throw it in the wash, wipe down the bass pan, roll out a new piece of fleece, replace items, replace chins, and collect the now clean fleece from the dryer when it's done to throw on top of the cage for next change.
Next day repeat with the other cage. In the meantime I'm maintaining 5 hedgehogs on a single layer of fleece as well and one with babies on carefresh. They don't have a whole bunch of stuff to remove from their cage though.