I have two really strong hives that I started this year. They filled out the 3 brood boxes and 3 supers each. When I extract the mostly capped frames and let the bees clean them out, what keeps the bees from feeling cramped and possibly swarming? What should you do to prepare them for the winter? They have a large amount of honey in the brood boxes and I was thinking of leaving one super on as well. Right now I have bees covering almost every frame in the brood boxes and supers.