In my experience, it’s important to constantly feed the bees during the first year (in Newfoundland), but it’s also important to stop feeding them at a certain point in the spring the following year so they don’t swarm. When I find drone comb gunking up the bottom of the frames in the spring, that’s my cue that the colony could potentially swarm. Queens can’t mate without drones. The first swarms usually coincide with the flight of the first drones.
If the bees have two or three solid frames of honey in every box — enough to prevent them from starving — and drone comb is present, then I stop feeding. I don’t feed my bees if they have enough honey on their own anyway, and unless it’s a weak colony, I don’t usually feed past May 31st either because there’s usually enough natural nectar sources available by then (in my local climate), especially in the city of St. John’s that is heavily populated by maple trees. I also check my hives at least every two weeks until the end of June to make sure the queen has room to lay. Most beekeeping (beyond feeding) can be summed up with that one sentence: Make sure the queen has room to lay.