What are the early blooming trees doing in your Location? the witch hazel bush, soft maples and elms?
Here we had first pollen on 2/17 from elms, witch hazel began blooming about the 2/12, first soft maples blooms opened about 2/20. Not alot of pollen coming in,but some in dribs and drabs- not alot of good forage temperatures for the bees yet.
This early (remember weather in late Feb and early March can be a witch) I like to put out dry pollen in feeders close by the hives, some I put out on 2/10. They mob them on good days and don't need hours and hours of warm temps to collect it like they do when foraging trees. Dry sub eases them into spring. Middle-late March is when I put patties on the bees to push them, they can consume the patty no matter the weather like a constant good pollen bloom. Not all my yards get pollen, only the ones that are normally pollen shy.
I am on the coast and cold ocean and bay water temperatures keep daytime highs lower here than in inland locations.
Most bees run out of stores here the last of Feb through March.
They need carbs before they need protein- now.
They need both to brood up-later in March.
Spring is ahead of itself this year (2-3 weeks), manage the bees accordingly.