Delegate coordination, not planning
If you have more direct reports than you can plan with individually, don't try to scale yourself. Pick 2-3 senior people who already know their area well and make them responsible for one question: "what should someone pick up next here?" They don't need a title change or a new meeting. They need you to say "you know this area best, new work here goes through you." You can now give real focus to 3 conversations instead of patchy focus to 12.