You are too kind Gita....the old girl just ain't what she used to be. I sit back now and listen to others give the suggestions.
Those plants of yours always look so well kept. Great job on your part. You know, that light at night will confuse those plants especially when it is time for them to bud. They should have 12 hours of dark if you remember prior to their budding time and during the time they begin to set buds. Of course, knowing you, you will get them to bloom no matter what. I just do not know how you do it.
Here is a picture of my sick Orange. There are no healthy ones to cut off. Same with the white that died.. When they first started to fall off I kept them in water to see if they would root and they all rotted. This is an amazing thing that is happening to these plants and I am not sure what to do about it except as I said, stop watering and see what happens.
I use cinnamon in the GH for ants. I have not used it in plants in the house because I thought it was just for insects, not fungus or whatever we have on ours. I still think it is overwatering.
Before
After
Just makes you sick to see them not responding and dying. I could cry. If only they could talk.