Hi! I inherited a 29-year-old jade plant from my parents several months ago, and I'm terrified that I'm killing it. Without realizing that the plant could go for a month without water, I was steadily adding a quart every week, until I did my homework and realized I was drowning it. :-/ An entire branch has rotted through (see moldy trunk in pic), which I recently cut off. It's steadily dropping leaves, which seem to crystalize. The good news is that I've drilled a hole in the bottom of the pot and haven't added water for over a month. The plant is also budding new leaves. I've added two grow lights because I don't get much summer sun in my apartment. I clearly need some advice, and any and all is appreciated! Should I re-pot, with dry soil to "start over"? Any other suggestions? Thanks!