As often as he likes will work, if he ups it to 3-6 it will do better than at 2.just make sure it doesn't dry out too much, keep it like 90% wet at the least. Basicly root bound in coco is great if you can keep up with the feeding and not letting it dry out, it's how Im pretty much growing nowI was asking for a friend. It was coco. He was feeding it twice a day, if it was coco you would recommend more than twice a day?