His adolescence has upset your former order in the household. Clearly, some guidelines need to be established, but being overly critical will lead to greater disharmony. You are also witnessing the natural disorganization that comes with hormonal upheaval. Remember that physical changes are careening internally, causing excitement to erupt in your son's life. Time is an important measure of independence.
Adolescence requires a major shift from parents.
Try changing gears from a parental authority figure that dictates rules to a friendly authority that sets a framework for your teenager to experiment with making independent choices. Your son is at the beginning of his adolescence. He needs contact and a commitment with you that promotes his sense of autonomy in making decisions. Start with choices around his own scheduling of study, chores and socializing. It is good news that your son is not only academically, but socially involved.