[Kasey]

He might not be quite ready for it yet and unless it is an absolute neccessity, I would probably hold off or go with him for the camping trip, or have him just go for a few hours and pick him up later?.
If you have to work or something you can't get out of, send him with pictures of you, make sure he can talk to you on the phone as much as he needs to, especially before bed and first thing in the morning.
He is probably insecure about leaving you and whether you will be back.
8 months is still early home and it sound like he may be struggling with some issues in terms of being away from you.
Best wishes, I know it is hard!!