It's probably earwigs eating your roots bro. I had plants wilting like that, for what appeared to be no reason, one year in my vegetable bed. I had grubs AND earwigs in my soil fuckin shit up. Over watering will make the leaves droop but not be soft in my experience. The leaves will feel firm, but still droop. Underwatering causes soft leaves and drooping in my experience. I used half full buried beer cans and sevin dust around the plants to get rid of them. They are back this year. I am trying neem to deter them until my shipment of spinosad concentrate gets here. I don't like using sevin dust anymore because it kills beneficial insects, and I'm sure it aint good for my frogs and lizards. I hear spinosad sprays will work on earwigs. But that only works if they are eating your plants foliage. I think they have a spinosad granular bait for earwigs in the root zone. I have heard it works as well.
Overwatering isn't how much you use while watering, it is more of how frequently you water. If you water quite frequently this will make a perfect home for earwigs and other pests. I run lots of water through my pots when watering and even more in the ground. But I let the soil dry out between waterings.