I had a Jade plant that was easily 15 years old if not older. It really did not need a lot, occasional watering and I think I repotted it a few times over the years. My house tends to be very dry, especially in the winter and I have to admit I am not that great in keeping up on watering so I have quite a few plants that like it dry. The jades do not seem to need to much water. Just check the leaves, if they are sort of shrunk in then give it a good drink, you might have to water it thoroughly for more then a day or two, and then just let it be. I had always thought full light was important but now I have a new smaller Jade in the bedroom and the ambient light seems to be just fine. I did notice it is not as green, the ends of the leaves have some redness to them. I sort of like that.