I have only one ds. I was a SAHM, and his charter high school was a bit of a drive as it was in a different town. His junior year we moved to that town to be closer to his school. It made a world of difference primarily from a social standpoint. He was a grade skip with a summer birthday so could only drive himself his senior year. As he got older and more social, many of the activities and friend gatherings he wanted to attend were in the town where the school was. He remained with his BSA troop in the first town, however. In high school, he had two primary ECs outside of school, and two or three in school. Church activities as well. He stopped doing organized sports a the end of the 6th grade. Most people I know that have multiple children limit the number of ECs each one can do. When you only have one kiddo, it’s easier for them to have more.
His sophomore year (before we moved to the school town) I attended a CLE class on time management. One initial exercise was to plot out how you spent your time each week. Of course, mine looked very different than most people attending as I was just taking the course to maintain my license. It was honestly kind of surprising to see how much time I spent in the car either driving or waiting when I put pen to paper to plot it out.