If this is a package, I would feed them more. I had a package of Italians that built up very fast, I gave them a frame of honey and fed them syrup, when I installed them. After they had more stores, I stopped feeding them. Then we had a few days of rain and they starved because of all the brood they were trying to rear without being able to collect more food. I don't like feeding my bees, but sometimes they need a little help.