Yes, the children today are growing up so quickly and know entirely too much at a young age.
Piecing is hard, in fact, it's the hardest part of the journey. It takes a while for him to settle back into his own skin and he has to earn your trust back. Don't rush the process and remember...it's going to be a new relationship once he's completely baked.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.