If you are to use it, make sure you are maintaining the temperature. you dont want the enclosure getting cold w/ a damp substrate... the'll get sick....
Bury another dry coco coil brick into the really damp coco coil, you will find the dry brick suck up all the excess water. Of cause you will end up with some more loss coco coil, but that mean you don't have to worry to add to much water or too little water.