Unfortunately i have broken the top of the plant, so the plant recived a topping at the 4th node, i'm curious to see what happens.
The girl have passed some troubles but now she's doing good, i've flushed with 33lt of pH'd water because she's suffering for an overfert and then fertilized again , and now she's back to Life π€£πͺ
I think it looks like nutrient burn. Not sure about your nutrients, but with mine I am at .25 tsp gal and about a week ahead of you. I suggest a flush with ph'd water or a very light nutrient mix.