I would posit that a change is as good as a rest, therefore having a slothful day when you would normally be doing productive stuff (listing-wise) is a rest. And is therefore legitimate.

I make sure that I usually prepare 3 listings per day. In TL. That way I only have to upload them when their time comes due. I don't list 3 a day, so I always have enough in advance and if I miss a day here or there in setting them up, I always have enough on hand to list them when they are scheduled to go.