[ He is a cultivator, so it isn't as though he's completely unprepared for things, although the poor Jin heir is still too young for something like this in Xichen's opinion. ]

You will have to become more used to these instincts. I'm afraid that does mean practice with them, although I recommend not hunting alone in the beginning. As I understand it, keeping control can be more difficult during a full moon. It would be better to have someone you trust around while you become accustomed to those feelings.