How can we best continue to help him?

Whatever you can do in the way of an additional session or sessions with deep subconscious channeling and trauma resolution will serve him greatly. It is the deep trauma that is making him so fragile and easily manipulated to darken his world. The more work you can do with the time and money available, the stronger he will be unless impaired through the manipulations of targeting, and that will help to support him in a significant way.