Any soil you have to wait that long between waterings isn't great for the plant.

It's not getting enough light. You have it stuffed in a corner when it would do much better if it were actually in front of the window.

If you want to see it grow, put it outside. Start with an area that gets natural ambient light from the sky but no direct sun. After about a week, you can acclimate it to direct sun if you choose. Start with an hour a day for a couple days and move up and hour until it's in full sun all day.

What part of Florida? If you're in south Florida, I'd just leave it out all year round. In any other part of leave it out most of the year and just bring it in when temps drop below 55° at night.

Leaf drop: Sounds like a draft problem. As ficuswrangler says...if the place you have your plant is uncomfortable for you...it's bad for your plant too.