Indoor Dying calyx auto ultimate??

[burnngo]

I have an auto ultimate which is 114 days old it is not ready yet it was mistreated early in its life and had nearly 3 weeks without a light before I was given her when she was about 6weeks old, it is flowering but it is no where near ready I don't think and I have to chop her a week tomorrow but may be able to give her a couple extra days, but at the bottom of every branch there are 2 calyx's and nearly all of them are either brown and dead or white and dying when I touch them they just flake off, a lot of my leaves are yellowing and have been lost which makes me think it is coming to the end of the plants life so is it usual for calyx's to die off ? If not any idea why it is doing this?