I bought a trailing jade (senecio jacobsensii/kleinia petraea) three weeks ago from a nursery in a hanging pot. I originally placed it in indirect sunlight but noticed that many of the leaves were turning brown and mushy then shriveling! I moved it closer to a southern-facing window. I watered it once. The soil has been continually moist, probably because the leaves in the pot cover the soil. Do I need to repot it? Or does it have root rot?