I started a TBH this spring with a 3 lbs package. They were coming along, and got about 7 bars drawn out. I have generally been leaving them alone but today I did do an inspection. There's about 3 bars of bees, a few are definately younger, most are old, but it seems like there are a lot of drones left over. There's definately no laying workers (yet) and not much drone comb. I suspect that drones don't die as fast as the workers? Anyway, I am guessing that the hive has been queenless for at least 3 or 4 weeks considering that all the brood has emerged. There are some stores and the hive, aside from being queenless looks healthy. I don't remember off hand, but is it too late to introduce a new queen if I shake a couple frames of bees into this hive? I am thinking that I will shake the bees in, wait an hour or two, and then put the new queen in. Sound good? This is my only TBH (probably my first mistake) so I can't add a frame of eggs from another hive.
As always, I appreciate all help.