It depends on your environment how fast they will dry out! 100° and 20% humidity will dry out a hell of a lot faster than 70° and 60% humidity! Those plants are not transpiring a lot of water! Most of the drying out is occurring because of an evaporation! At least until the plants get bigger. And the roots start occupying more of the pot. If you don’t have good air circulation over, under, and around the pots, they might take forever to dry out! And just because you stick your finger, two or 3 inches into the top of the soil to check for moisture doesn’t mean that’s what the moisture will be in the middle or the bottom of the pot. I would be inclined on a couple of them to not water For four or five days and see if the plant don’t start perking up after two or three of that. And when you water you need to slowly water the entire pot. Not just this area underneath the canopy of the plant. Roots will not grow into dry soil. So if you only water a limited small area, that’s where the roots will stay. Watering is nothing more than wetting all of the soil in the pot, and then not watering again until most of it has dried out! Pot plants don’t like having their roots wet all the time. You need to let that medium dry out or come close to it before you water again. They recover from under watering in a couple of hours. Recovery from overwatering takes days! That’s just my take on it. Others will have other things to say.