I know I can't help - I posted something similiar a few weeks ago and hoped that somebody has had some experience. I have had three plants this year, all start drooping - they don't turn brown, they have no bug or fungus, just droop - I have read everything I can online, most other people with similiar problems say it is too much water. In my haste I pulled one plant out.
Another I stopped watering and it came back for awhile only to die again. I did notice the roots when I pulled them were very wet. Some say take them out of the sun and don't water for a few days, well if there in the ground that is next to impossible. Another lady said and I quote " add cornmeal to the soil" she said it helped with the overwatering - I have no clue if it works. I am ready to try it with my third plant that did this, I am looking at it now, green as can be - just exceptionally drooping. I sprayed a foilar spray on leaves (fish emulsion) per another post, nothing so far, hasn't died, hasn't perked up - I am really gonna try to just let it go and see how long it takes to either crock or perk up
- as a experiment as I can find no real talk about this issue. I hope your plants get better, so depressing get them to a certain point only to lose them. You can look up that CORN MEAL post - by searching it online - not on this forum it was just a general search and I have seen it three or four times, she goes in depth on what it does. Best of luck to you.