[help] yellow leaves, leaves softened

Hello everyone, my plant now in Week 5 flowering,but leaves sicken phenomenon, I took some pictures, I want to ask for help, how to fix it. I planted with coco mix.
Thank all, hope respone quick.

Looks a lot like nutrient burn. What kind of nutes are you using and what is your feeding schedule. Also could be too high a temperature. what is the temp in your grow room?

i see some tips of leaves yellowing which could be some Nute Burn what are you feeding them???

Looks like some N tox in there from the tips id do a full flush of clean water!!! untill she bonces back

tks for answer, i used AN nutritrent, i will flush at tomorow