The growing centres are ok so stop messing the plant around. Constantly changing the conditions ( moving it) can upset the plants. Try leaving it in the same spot and water consistently.
I've no idea about root rot, it's NOT caused by overwatering as I don't believe you can with a Cephalotus. I've been standing the pots in water for 33 years and never had any. When I say that they're tolerant I mean that they'll suffer being kept drier.