Thanks,
@RueOshaRose, for the location update.
Actually, given time, practically all jade will become top-heavy. They simply are heavy stemmed/heavy leafed plants. I end up putting every single one of my larger plants into clay pots, pretty good-sized pots at that. I also have to stake them with several stakes, tying those heavy branches more upright. Those three plants I left out this winter weighed in at 30-40 lbs. I have had much larger ones than these, weighing over 50 lbs.
Grace, when you jade grows some, and fills out some, you'll be able to tell whether you need to/want to cut it back for better form. As a bonus, you can root those cuttings and have new plants. I think a south-facing window is great. Jade can be acclimated to full sun but if not acclimated slowly, you'll have a lot of sunburned leaves on your hands. During the spring-early fall, I give my jade a few hours of morning sun and/or a few hours of late afternoon sun. Otherwise, they are in mottled shade under oak trees.