Hi there,
Every plant grows different and takes different amount of water. For the first couple days, just mist well with a spray bottle. After 5-7 days of misting (unless high temps and coco has gone bone dry) and the plant has grown a set of leaves I start lifting my pot to see if it is getting lighter from inital planting. Once it starts to get lighter then start watering a small amount each day. Make sure it never gets dry, so if you need to before day 5-7 then water lightly. Has the plant grows, you can add more over time. Read how the plant reacts, but start slow! Trust the misting process for a few days.
There is no set amount to water, as I said at the beginning all plants are different.
Good luck!