the same fucking thing happened to me. 2 weeks later and almost no real help from anyone, my plant was dead. i'm guessing it could be that you need to flush. what kind of soil are you using? it spreads like wildfire so try to find out before it gets bad.
if the tips of the leafe are curling then it could be nute burn. trim it and keep an eye out. if it starts at the top it will work its way down generally
im using organic soil and fish and seaweed fertz with microblast and superthrive. She is somewhere around 40 days old and still in veg(24/0). She showed stigmas around 30 days old. She a little over a foot tall.