It sounds like you and your son have been struggling with his first grade experience. Being the youngest in a class is always challenging. This, coupled with the health issue you describe creates a complicated situation. You are wise to ask for advice. Start with your pediatrician. Explain what your child has been going through at school and ask for his or her advice. Then request a meeting with his first grade teacher. At the meeting discuss your concerns and the pediatrician’s evaluation. If you collectively decide to have him repeat first grade, for health and academic issues, it can be a very positive experience at this early point in his life.