Drooping leaves, brittle

Hello So this drooping is definitely a bit more than you want to see happening. If the yellowing leaves pull off easily it usually is nitrogen deficiency. But with the drooping leaves if you aren't seeing them perk up after being watered you can usually eliminate under watering. However an overwatered plant can also do this droop...along with root problems like rot or root bound. If you aren't seeing any change from either letting dry or from watering i would consider the root problems. First when you water is the whole pot soaked or could there be some dry pockets? This can happen and cause problems (i was bad about giving my plants just enough water, versus soaking thoroughly and my plants suffered). You can try watering with a hydrogen peroxide water to increase oxygen and kill any bad bacteria, but you would want to water with a good bacteria product afterwards, some sort of living organisms, hydroguard, root shield etc. And double check that your ph and the runoff water are in the right zone. And then watch for positive changes over a couple days. *if you don't normally check and monitor the ph...i would suggest doing that. Even with these "ph perfect" products I've had some grows go perfect and others that went horribly off from not monitoring the ph occasionally. Happy growing and good luck to you guys.✌️