Dracaena does not have drainage, it is placed in gravel. So it's practically in the water, and it's been like that for months. Also I have a few questions about the other two.
1. About the Ficus, what should I do about the overwatering problem, other than cut down on watering. Should I treat it or should I leave it alone?
2. About the carnivorous plants, should I just cut the suffering parts and leave it alone? What could I do next winter to ensure that doesn't happen again?