The fact that you love him and support him is very foreign and almost probably uncomfortable for him. I am not telling you what you are doing is wrong; in fact, you are giving him a gift he does not quite know how to accept nor how to fit into properly. Imagine your whole life being told you are not good enough, not lovable, not ever being able to measure up; this is where he is at in life. Your parents are your road map, your role models, your everything and when they abuse that authority, you become one messed up individual.  His N's controlled every aspect of his life. It is somewhat like re-raising him in a sense. I encourage you both to enjoy his path to self-discovery.

We crave love and support but don't really know what to do with it when we get it. I encourage you to be patient, understanding, empathetic and kind. Love him and then love him some more. In doing so, remember to love yourself too. This will take a lot of work on both of your parts, but hopefully, the end will justify the means. I wish you both lots of happiness, love and a year filled with blessings. 

BTW give him a hug from me...he probably will act like he doesn't like it, but deep down he really does; I know this for a fact.