Overwatering/Underwatering? Trimming?

Plant is 3months 1week old in a 3 gallon pot. 600w led light 100 actual watts, the temp stays 70-75 during day humidity at 45-55 and 70-73 during night humidity at 55-60, it gets 18hrs light 6 hours no light. Last time I watered was probably 2-3 days ago. I’ve been watering as much as it will take before getting too much runoff but it seems the leafs are drooping and dying off the more I water it and when it dries out the leafs seem to stick up more. I been feeding it every other watering with about 6ml of the fox farms grow big for 850ml of water for about 2 weeks now it dries out in 3-4 days sometimes so I double the water and nutrients as needed or at least as much as it will hold till runoff. I’m thinking about getting a net to hold the branches up towards the light. Also I’m not rly sure which branches should b trimmed and which should stay any help is appreciated.

Coming from a FF nute user myself, I always use a little less than what the bottle says. Right now during veg the bottle says to use 6 tsp per gallon of water, I use 3. The older they get the more I go up, but never based on if I feel they need it. Secondly, do you use calmag? Third, do you ph your water? You should have a feeding schedule and stick to it. Try not to switch it up too much unless you notice something is wrong, in most cases it’s backing off a little of what you’re using. Cannabis can grow without our intervention, so caution must be taken when adding things to assist in their growing. From what you said, it sounds like you’re either over feeding or overwatering. Notice they perk up when the soil dries, that’s because the roots are in search of food and moisture. If they are constantly sitting in a soiled environment, it’ll never grow and not do so well. Not sure if you are in soil or coco, but which ever it is will determine how your watering is performed, and when.

It looks hi in Nitrogen to me. Dark green drooping leaves