Agree with @lookingforward wholeheartedly. Don’t add extra tutoring unless you think your child is somehow behind at school. Boys (generalization - I have two) seem less inclined to write about themselves and their writing abilities seem to develop a little later than girls. (Of course there are exceptions, but most of my friends with boys agree.) Don’t worry about college essays for a few more years. Just make sure your son does well in school.
When the time comes, ask around to other parents in your area about resources for essay prep. Friends and parents of top HS students who recently went through college admissions can often be the best references.