I would remove the empty bottom deep if you only have 4 frames of bees. No point in making the bees heat a much bigger house than they need. Although the larger surface area of a 2 deep setup would capture more solar heat (on those 1 or 2 days of sun we’ve been getting). This spring has been something else, more like an extended March. Let’s hope the real spring has finally arrived. Been nice the past few days.
Joe D, our trees don’t even have leaves yet. Not even a sign of dandelions yet.
I wouldn’t feed, there are enough sources to sustain them even now. Once spring really kicks in, we’ll have plenty of nectar for the bees.
Congratulations on surviving winter, the bees too.