Hello,
I am also new to coco, have 40 days old plant.
How did you soak coco before use? Which brand do you use?
Dont you use EC meter? You start with somewhere about 0,8, what is 1/4 strenght of nutrients + 1 ml calmag most probably.
I grow in 15l airpot and proper watering is still a mystery for me, especially because of very different advices. Some say you start with everyday watering, some say every fifth day at the beginning.
My Think Different had been underwatered and underfed while I had been waiting for coco to dry a little bit. So I see that underfeeding is bigger danger as overwatering and it happens very quick if you wait.
One more thing, outrun has very high ph and very low EC at the beginning, so seems that enough water must go through to fullfill coco at first. And that is quite a lot of water (with calmag and nutr., of course), at least in Plagron Premium coco which I use.
Good Luck!