"That was a lot of transformations in a short time..and apparently its permanent now. I don't have to drink any more tea to keep it." If it is a consequence of using it too much he will have to make sure to limit it to just once a day or something that won't stress his body out so much.

"I wonder what would have happened if you weren't there with me." would he have simply wandered off until he got his mind back and if so..where would he have wandered to? It could have been dangerous to just be wandering the halls with no memory.