If you are really concerned about difficulties your son may have in learning you owe it to him and yourself to have him evaluated by sensitive, talented professionals. You obviously value education greatly; some collaborating with these professional specialists could surely help you adapt your teaching to his learning styles.
Get Adam involved with social activities outside the home, ones that he expresses an interest in. Look to the things Adam does well(not just in academics) and find ways for him to feel even better about these skills, talents and interests. The better he feels about himself and what he has to offer the more confident he will be presenting himself in life. Good luck. Enjoy your son.