Post harvest question on supers

Q: I harvested supers last weekend and placed the 'wet' frames back on the hives for the bees to clean. Today I went to remove the supers to prep for winter storage. What I found was they had cleaned up the frames remarkably well and were already storing new nectar on multiple frames.

Do I let them continue for a while and then try a mini-harvest in a month? Or do I bring them in now and let the nectar sit in storage until spring?

I'm in Southern California, so we don't get a real winter.