I was given a Jade approx 35 years old. I believe it is sick. Some branches are wilting and rotting. Some leaves have brown or black spots. There are almost invisable spider webs and shiny, dusty white stuff on some branches. I had a 16 year old jade that had the same issues. I treated it for 3 years until there was nothing left to treat. I failed once before and pray it doesn't happen again with this plant. I don't know where to start. I know it is way past due for a transplant but afraid to put it through more shock. It is winter, we live in MI, it was just moved twice in two months from three different homes. Should I wait? What should I treat with? Please help me save this beautiful plant. I have tried to include pictures. The current pot is supporting some main limbs and I worry when I move to a new pot I will need to support with something else. Also, there are a couple zip ties that previous owner had on plant that I think I should cut off since the truck is starting to grow into the zip tie.