Hello bro.
Shes already on overdose ..and too less humid, needs to be on 70/80s at this point..
Chill out on the nutes bro, a plant dont die from underfeeding but will die for sure from overdosing..
Dont feed until she grows 3 pairs on leaves, unless you grow on coco.
Root nutes are ok but those tripart nutes will kill the plant.
Also theres no need for 20h light, she cant "fotowork" that much with no leaves..
Let her rest as plants grow better on dark periods .
Let 12h on and 12h off until she grows 3 pairs of leaves, then switch to 18h on and 6h off until flower is advanced, back to 12h on 12off then until finish.
You can use this lights schedule even on autoflowers as periods.
Happy grow and good luck
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