I have an older friend who isn't able to get online that I'd like to ask a question for. He has 3 hives and lately has been having aggressive bees coming around the house for about 2 weeks now. We requeened 2 of the hives, the most suspicious to be aggressive (although none really seemed aggressive during inspections) 2 days ago. We also cut back the entrances to address any robbing going on. How long should it take to cool the hives down, or is there anything we can do to determine which hive is the likely aggressor? Thanks in advance for any input!