I, too, find myself with three queen-less hives (my total apiary). All had last year's queens (I didn't re-queen), but in the past they've done fine by themselves. I don't know what happened this year.
I had thought two of the hives were looking good, but checked them today, every frame, and almost no brood in any, no eggs or larvae or queens. All three hives are filling all the frames with honey right now. I'm not feeding, so at least it'll be edible and not from syrup.
It seems my hives are beyond re-queening at this point because I have no brood to carry a new queen over and no working hives to take a frame from. I think my only salvation right now would be a swarm or two. I'm bummed.
Hope you do better, Rick.
--Laurie