This plant is like 4-5 weeks flowering I think it started earlier then the other ones. It just started having this problem mildly like 2 weeks ago now its getting hella bad whats up with the thing?
It's severe nutrient deficiency, nitrogen, pottasium and phosphorus probably caused by toxic nutrient salt build up, whacked ph and/or a pot that is simply too small for it's current root nutrient requirements.
Repot it into some fresh soil, a larger pot and give it a good 1/4 weak nutrient flush, and thereafter nutrient feeds at 1/2 - full strength. The plant will be severely stressed as well, use drop or two of superthrive in with the nutrient flush to relieve transplant stress. It will probably add a few weeks to the flowering time while it recovers and gets back on course again.