so other than putting it outside onto my non existent balcony, what I need to do now is to give it more water and less sun?
No. It's already getting less sun as it is indoors. You need lower temperatures - so it drops its leaves and goes dormant.
Next year, when the days lengthen and it gets warmer, you're going to need more light - more than it will get indoors.
Indoors, it is not going to do well in the long run.