I had a hive go queenless. I discovered it about two to three weeks ago. The numbers are down as far as workers, but I decided to give them a chance. I finally found a mated queen and bought her. She came in the mail yesterday . I was going to reduce the hive size at the same time I introduced her but the weather had gotten down to 51.
So rather than move the frames in the cool weather I just quickly put her cage inside and closed them back up. I plan on maybe moving them to a 3 or possibly 5 frame box and if they build up.