The bottom line is that you want to reconnect with your son. Approaching an alienated (PAS) child is similar to approaching someone in a cult. To have the best chance of reconnecting, you need to understand their mindset. So you'll need to at least understand the basics of Parental Alienation Syndrome. There are 8 specific symptoms, so it's easy to assess where your child is. That will help you understand the programming they've been subjected to and how deeply ingrained it is. Once you know where they are, you can start where they are and decide the best approach.