Hi guys I’m pretty new to this app! We recently moved and the previous owner left a few of her plants one of them being a Christmas cactus. She did take many cuttings off of it and when we moved in it wasn’t doing so well. More recently the leaves have been getting covered in a waxy layer then slowly dying leaving like a crispy wax shell. I’m not sure what it is but I figured k would reach out seeing as google doesn’t have many results. Here are a few photos: