Pito.. dude, some of my leaves have curled too, I don't know if it's because of the light or the heat, but anyway, don't worry, it's not serious, they're already looking better I've seen😉 so Trani, it will come.

leaves turn toward light. mentioned this in your last question. Too much competition/congestion. if you just LST'd that also may cause some controtion until it finds the most light.

just like in the other questions, light stress, too many leaves, and they're fighting for light, remove a few and the shoots that are pointing down too, then it will get better. it's not about the nutrients and not about the water either.

Either over watered or to much nitrogen.