So your a day in to dry out.....Watch closely to see when you start to get some stem droop, that means water pressure in the cells isn't enough to keep them stiff.......leaf stems are a good indicator, just the leaf part drooping means more water than they can transpire and it's backing up in the leaf giving it more weight (hence the drooping)...if leaf AND it's stem droop there's not enough water pressure to maintain rigidity in the cells ( she needs water)......I have had em looking fine at lights out and the upper 1/3 drooping by lights on before. Kind of panic inducing but they always sprang back up a couple hours after watering...gave a good indication of how many days in between I could go at that stage, took a day off that amount and they stayed happy till they were using more than I was giving them, so dropped that by a day etc....bearing in mind I use soil...coco is a completely different thing.