I recently trapped a very small swarm in a bait hive. I live in the city and there is still a good nectar flow in my area. Do you think I should feed them sugar syrup to increase their survival ability? Queen is laying but not a lot. Also, they stopped building comb in the 5 frame nuc they are in. My few hives are treatment-free and I tend not to feed, except on rare occasions. Any suggestions? Thanks for all.