I dont have a lot of experience with coco myself but I know some of the other guys around here do or have.
One thing I have read a lot is that coco will dry out fairly quickly and most people are watering every couple days if not every day because it drains and drys so quickly.
On the other hand, it's best to let your plants tell you when they need water/feed. They seems to be pretty happy and there no leaves drooping, so if you feel moisture in the coco still, maybe wait another day and recheck.
One thing I have read a lot is that coco will dry out fairly quickly and most people are watering every couple days if not every day because it drains and drys so quickly.
On the other hand, it's best to let your plants tell you when they need water/feed. They seems to be pretty happy and there no leaves drooping, so if you feel moisture in the coco still, maybe wait another day and recheck.