First, leave them alone until the other hives have laying queens. They aren't hurting anything and they won't get any worse. They are what they are. Once you have some brood, you can try the 3 weeks of brood insertion if you wish, but with limit assets, I think I would seal them up and kill them, then give the assets to the other hives. I would feed to re-build the hives. If you don't have queens hatch on schedule, buy some.