I offered queens as a solution. CV does not say just how long they have been queenless. I have turned some around just by adding a queen, when caught early. But the longer it goes, the longer it seems to take to turn them back around.
I stand by what I said....Shake them out and let them join the other hive....I have wasted time giving frames of eggs to a laying worker hive until they decide to make a queen. Sometimes on the second frame sometimes on the third frame, it can work...but, sorry, for me that is wasted time...a commodity I choose not to waste when possible.
There is no loss in shaking them out and letting them move into the other hive. Then making a fresh split from that hive. A split will begin raising a new queen right away without any problem. Just saved 2 or 3 trips to that yard and I still have 2 hives. Ancient trick...Stupid job...whatever.. it will work.