Jade plant is healthy .yes im not sure why my jade plant leafs fallen off.it reminds me in the fall when the trees does this.I think alot more indirect light at least.because it does get dark in my living room where its only light is when the sun is going down in the short days of winter.I have to put it in a opposite side of the house or at least a brighter window.wich I have late morning ,basicly im where the sun comeing over my trees then the sun comes around down it goes around down by late after noon.I lose the sunlight by my living room where my jade plant is.