Newer leaves becoming more and more drooped down 3...

No two plants, even if growing side by side in the same conditions, same sized pot, same substrate, same everything will ever have the same, identical requirements. Each plant is an unique individual that will have its very own specific needs. Just being slightly closer to a fan will increase a plants' water requirements drastically. To me, your plant looks thirsty and if you haven't watered it for 3 days, this would be my first area of investigation. Without a diary or much more information as to what you are doing, giving a more specific answer would only be a guess. It could also be a reaction to nitrogen toxicity, but this is only a guess. Without a diary, it is a bit like a sick person going to the doctor and not saying anything apart from the words "I'm sick". Hope this helps, Organoman.

More perlite in substrate in future grows. Pick up bucket to also measure amount of water in soil. Water is heavy.

Your over watering them. If your in five gallon pots water a quarter to half gallon of water ph adjusted every four or five days and let it dry out some to catch up or you’ll water log them.