First, they won't need pollen until brood rearing begins in Jan. or Feb.
Second, Wax moths aren't around when they are in cluster, so no worry there.
Third, They know where the stores are and will use them on an upward movement.
Fourth, They will only move down as the new nectar in the spring fills in above them. They will always store incoming nectar in top and move the brood nest down accordingly.
I agree with Rat, leave them as they are, but do have a mouse guard on the entrance.
Check for pollen stores when they start brooding in Jan. or Feb, and add if needed.