Vrie,

It would be good if you can spend time with him doing any kind of daily tasks. The more intense the task the better. This way you will be able to see him under stress. This is the real him. Seeing him struggle will be important. He does not need help when he struggles. What is more important is to see how he handles struggles and how you handle watching him struggle.

Go with him to congested public environments. See how he handles over-stimulation. This will give you more understanding of his functions. Montana is a great place to be brain injured because there is a lot of opportunity to be away from congested public environments.

My best to you.