Yes, the plants were suffering from heat stress. The temps were at 90 degrees I think. But once I realized that, I made some changes and got the temps down to a cool 75 consistently. Humidity was about 35%.

As for the watering, I was watering them almost every day. The tops of the soil became crusted because of the heat, but again, I fixed that. Also I have started watering the whole soil, not just the central part.

I have updated pictures of my plants but I haven't posted them yet. I killed all but two of the plants because there just wasn't enough room. One of my plants has tons of branches (but I'm pretty sure it's male), and the other one is taller but only one main "stalk" (not sure what the sex is yet).

I'll post pictures later today. Thanks so much for your input!