What should I do if my child cannot concentrate in the academy?

I have concerns about children who struggle to concentrate while attending academies in Korea. Especially young children often find it difficult to focus for an hour at these academies. In my case, I remember having trouble concentrating while attending various academies when I was younger. Children attending academies in areas like Gangnam or Hongdae often feel tired as they move between multiple academies. Learning various subjects such as English, piano, art, taekwondo, calligraphy, and comprehensive studies can naturally lead to a decrease in concentration. How can we help children improve their focus while attending academies? I would like to hear advice from parents. I am curious if there are ways for children to grow healthily without attending academies.