hello....i recently got a jade
plant and am having the same problem, however the card that came with my
plant said to keep it in bright sunlight, and before u water it, just stick ur finger into the soil to make sure that it is dry the whole way through. root rot with a jade is a sad, sad thing to watch. however, if u do fear root rot, u can always clip off branches right where they go from brown to green, stick them in soil, and with a lil TLC and not too much water they will grow roots, as long as the root rot has not made it's way throughout the whole
plant. i hope this helps you!