What do you think is wrong? Bud rot...I'm guessing from over watering. Just made the 12/12 flip three days ago.how do you all recommend to fix these Herbs. Real growers only!!!
This surely is a root issue. Either you've seriously over-watered them or they've developed root rot....probably a combination of both.
Your best bet is to stop watering them and hope. Root rot is devastating when its progressed this far. I've seen huge healthy plants destroyed in a matter of days.
The one plant that looks dead, I would remove it from the grow room. Keep it isolated and change the conditions (less watering).
I have my fingers crossed for you, but doesn't look good.
In the future, SAR inducers do a great job of helping fight against these things.