I have a 3 deep frame obs hive. All bees are clustered on the top frame. They have eaten all their stores and I have a feed bottle on top which they are taking. It is simply a honey bottle with a pointed spout which the bees(one at a time I think) eat through. My concern is not cluster size but whether they can get enough food to survive with this setup. I would love to open up the hive and give them some honey in a frame, but temps have not allowed. I suppose doing so would be the kiss of doom?