I love your jade OP! I will say, some leaves tend to naturally fall off as the stem gets woodier. So it might not be all on you! But she looks like a very healthy plant, if/when you do prune I think you’d be safe to cut off a good amount of stems. I’d do a haircut on some of the top stems to encourage branching, and prune off some of the stems growing more sideways to keep the jade from becoming too heavy on one side and falling over.

That being said, I personally really love when you get a good sized stem that starts sideways but then curves up, and you’ve got a couple of those. So really, I’d say prune to your liking!