Just checked on them and they're looking much better today. They've perked up quite a bit and are continuing to stretch so I don't think all hope is lost. I lifted them off the ground a bit using a couple crates and am trying to get better airflow in the tent. I think my humidity has been a bit high in the tent which in combination with the overwatering was probably giving me the issues. I'll post how things are looking after another day or two of drying out.