From a fellow new beek
1. Look for straight, on-track combs. Fix or remove those that are wildly out of line.
2. Look for eggs, larva and capped brood. Maybe find the queen
3. Look for enough space. Does the queen have anywhere new to lay? Consider adding in an empty bar on either end of the brood chamber to give more room for growth. If they have lots stored, stop feeding (if you are)
4. Look for swarm or supercedure cells. If swarm cells, make a plan of action. Do nothing. Do a split. Plant bait hives around that hive. Etc.
5. Look for anything else out of line. Are they being robbed? Is there an ant problem? Mites? Anything else problematic?
6. As for drone, unless it is ALL drone, what can you do about it? They will make drone comb as they see fit. Maybe it is your reproductive season right now and there should be lots of drones out and about.
About feeding, I fed dry sugar last fall, syrup this spring. I have not used fondant, but I believe there are threads about it on here. Good luck!!