My eggplants are yellow and blossoms turn brown and fall. How to treat?
Treating Wilt on Eggplants
Certified GKH Gardening Expert
If it truly is wilt, there is nothing you can do for the plants. They need to be removed and destroyed and you should not plant any nightshade plants there for at least 2 years because the disease will affect those plants as well.
But, what you describe could also be caused simply by too little water. Try increasing water to the plants to see if that improves their condition.