Hello i am new to beekeeping and have a bit of a dilemma. Do i have enough bees for them to successfully over-winter. In mid June i received 2 five frame nucs, I successfully installed them using the 'Chop and crop' method into 2 warré hives. The season is slowly coming to an end (I live in europe, Bohemia, hardiness zone 7a) and my two colonies have so far each only filled the top box (eight bars). With the help of some sugar feed will there still be time for the colony to grow before winter, or should I play it safe and combine the 2 colonies into one before winter hits?