Management is only really necessary if you need to make multitasking possible, e.g. to level or optimize workload. You can reduce management effort e.g. by simply planning more time (buffer) to execute a task. Find out the point in holistic optimization where downsizing management by increasing duration is not overdriven by more management effort for too much multitasking !
Try to avoid multitasking, to keep to a task and finish it instead. Put in lock waits where you are not disturbed. That saves time and energy as you don’t have to immerse in the task over and over again.