My Christmas cactus continues to lose part of its fronds. I find them laying on the table daily. What am I doing wrong? I want to make it rebloom. I have my A/C on 24/7 due to my COPD. I Live in an apt. and the only place I have to place it for darkness to try to get it to bloom is in a clothes closet. The only window I have is where the morning sun comes in, so I have it sitting in the middle of the room. Any help would be much appreciated.