Overwatered?

I think your issue is you are overloading your substrate with nutrient salts which can actually dehydrate your plant, hence the droopy leaves. Fertilizing every time you irrigate is not ideal in soil grows, I personally follow a schedule of plain water/plain water/fertilizer, but most people here go with a plain water/fertilizer/plain water/fertilizer routine and really force feed their plants. I would suggest just plain water for the next few irrigations, at least until your plant perks up again. After this, be a bit more light handed with the fertilizers/nutrients and follow 011010 advice when it comes to an irrigation routine. That is, never give a pre-conceived amount of water or water to a schedule (like every 2 days just because you feel the need to "do something"),.......always fully saturate until run-off, then don't water again until the top inch and a half has dried out again. Giving your plants every product from the grow shop won't make them grow any faster or bigger, it only serves to increase the risk of soil toxicity.

hey 👋 Not 100% sure, but I agree with you : to me it looks like a slight overwatering issue, or rather a change in the watering routine: they probably got a bit too much water these past few days (the substrate looks rather dark on the surface), and since they weren’t used to that, they weren’t ready for such a significant increase. It was probably also accompanied by water that was a bit too cool. Personally, I’d leave them for 2/3 days without any watering at all, then resume a normal schedule with balanced-pH water, ideally between 20 and 25°C.

Under watered most probably, don't wait until the bottom is dry, that's too dry and not good for the roots.. Add more acti-vera, bio-grow and make sure the pH is correct every time, with out correct pH your peeing into the wind..

based on the amount of perlite i see, i doubt it is from 'watering too fast.' If the medium is constituted properly, that's nearly impossible under any normal circumstances. If it is at the end of the day, it could be just a bit too much light and the plant is shutting down early. If it's right as the lights turn on, that's normal to be droopy in the dark. I'd wager it has something to do with irrigation practices. By the way you've talked about it, you're still trying to find a good rhythm. Keep it simple. 1) fully saturate - don't try to give a pre-ordained amount. You give what it takes. If this is soilless, also get 10% runoff. Eitherh way, dry pockets are the concern. 2) wait for appropriate dryback / loss of weight. If it's the same loss of weight, it'll take a predictable amount of water. So, consistency helps in that regard. Definitely don't let it wilt, that's letting it dry too much. You don't choose the volume. You give what it takes to accomplish the task. This will never cause a problem in a properly constituted medium. You may or may not need more perlite, but it certainly has a fair amount. coco should be 33% perlite by volume. A higher water capacity medium should be 50%. Perlite or vermiculite etc.. options exist. A typical store-bought soil or sphagnum peat moss base should be 50% drainage/aeration amendment. A little less is not a major problem. plenty of people have grown fine bud with a less than idea gas:water mixture around the roots :P but, something to stick to in the future. makes it impossible to cause any problems watering assuming the bare minimum common sense.