I discovered I was overwatering and overexposing after some research. Now 75% of the leaves have fallen off and the rest look sickly. I'm not sure what to do.
So far I've just been keeping it in indirect sunlight and watering it with filtered water only when the soil feels dry. Other than that, what can I do? Repot? Fertilize? Mist? Just wait?
I could use some help--the person who gave me the plant will be furious when they see what I have done!

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