i agree with bjornbee. you need to know why you are feeding. for instance, i will not feed syrup this early. they won't take it cold and if we have a warm day that allows them to take it, it will just add moisture to the hive. however, we had a hard winter and i know that in at least 3 of my hives, the numbers are way down. i want to encourage brood so that when there is stuff to bring in, they have the numbers. our season is short.
i know they are finding some natural pollen sources and bringing it in. i am just adding to what nature is providing to given them a little help
if you are concerned that they are light on stores, use dry sugar on the inner cover or on newspaper over the frames. spray it lightly with water and they will use it as they need it.