Hi Ian, firstly if SHB is in your area, I'd recommend removing any frames that contain brood or pollen that don't have a good covering of worker bees on them.
I would wait a month before looking in on the bees for evidence that the queen has mated successfully. It will be good if you have a gap on one side of each super so you can move the frames across. Check on the frame in the middle of the bee mass. A newly mated queen can be sluggish at the start, she may not have laid on the first frame you check. You should see a clear pattern on the frames. Honey at the top with a half football curve with pollen at the edges & a clear area of empty cells the bees have left for the queen to lay eggs in.
Take the advice of your local beekeepers in relation to feeding. However you'll be able to see if your bees are bringing much in. A simple test will confirm that. Put a saucer with some sugar water or honey in it out the back. See how quickly the bees find it. If it takes ages for the bees to find it, that will tell you that they are bringing lots in. Anyway they probably wouldn't have swarmed during a dearth.
I think 3 or 4, just kidding.