So coco is completely void of nutrients. That means you need to feed nutes with every watering if you aren't already. You should also water so that you get a fair amount of runoff, somewhere in the range of 20-30%. You also don't ever want to let the coco dry out. Doing so will cause all sorts of issues as your nutes in the coco will dry out and become salts that can damage the roots. I typically water my plants every 2 days when they are seedlings until late veg and then start watering every day until harvest. It really depends on the pot size and how much perlite you add if any. For example my last grow I grew autos in 1 gal cloth pots with 70% coco 30% perlite and had to start watering every day a little bit sooner than my first grow where they wound up in 5 gal cloth pots. My current grow I am using pure coco w/o perlite and can water every 3 days in 1-liter airpots at seedling and early veg so far. I'll be bumping up to 3gal airpots soon and likely still feeding every 3 days until I flower, but we shall see. You should also check your runoff ph weekly just to see what's coming out. Generally, you don't need to worry about it too much, but if for some reason your runoff ph is wildly different than what you are putting in it could mean you might have a problem soon. I've noticed if I'm feeding too heavily my runoff will wind up being a significantly lower ph than what I'm putting in due to the plant not using all the nutes and them washing out in my runoff. If ph is coming out significantly higher then you might be able to feed more as the plant is likely using all the nutes up. Granted that's not a rule to 100% go by, its just an observation I've had.