I've been feeling a bit better today. I managed to dig a patch of bindweed which was spreading out across the ground and rooting as it went. I split Hives 4 and 5. I was hoping 3, the split from 4, would raise its own queen cells, but it failed to do so, so I gave it a cell, and gave another to the split from 5,which is now Hive 6. I left a cell in the top story on Hive 3 as well, and we'll see how many of them mate successfully.