not sure what your containers are but you should try bottom watering. First let those things dry.
if you have a kitchen scale or something try weighing them every day and you will see a distinct stabilization in the weight loss. Of course dont let them die but try to get to this number. Thats your dry plant.
put an inch of water in a bowl or something and put the pot in it for 25 minutes. Drain for a few then on the scale. Watered weight.
You dont need to do this forever but after a week or so you will see how many days before you need to underwater again. Dont water blind