I have inherited my grandparents' Christmas catcus. Of course, we had to repot it cause the roots were growing through the plastic container. It is over 40 yrs old. Well, it looks droopy, the soil is dry to the touch but moist deeper. It has had some pieces break off like whole stems. It looks unhealthy and I don't know what to do. I don't know if I waterd too much or not enough. It is by a window that has a shade. I keep the shade up during the day. I don't want it to die. Any suggestions would be great. Thank you.