I am starting out my first year of beekeeping. The only problem I'm having is figuring out when to add my second hive body. I know usually you would add it when the bottom box has 7-10 frames of foundation drawn out. My situation is that my frames all have foundation drawn out on them. I bought out a retiring beekeeper in January, who had four hives worth of frames and foundation. If anyone could help me out with the timing on this, I would greatly appreciate it. I'm located in south-east Michigan.