How do I teach my child to manage his time and responsibilities such as schoolwork without me constantly telling him?

The aim is for the child to learn to be responsible on his own, so teach him to plan, not just to obey your instructions. Build a clear daily routine with him: prayer times, schoolwork, helping at home, and play. Use a timetable or simple checklist he can tick himself so that he feels ownership. Let him feel the natural consequences if he is careless, such as unfinished work, so that he learns from it. Lecture less; one calm reminder is enough. Praise him when he finishes a task without being told. Responsibility trained from childhood becomes self-discipline in adulthood. See educating the family.