That is a ton of hours for a 6-year-old. L4 at my daughter's gym is 4 days x 3.5 hours (14 hours per week); L3 is 3 days x 3.5 hours (10.5 hours). There are definitely no 6-year-olds in either group. The preteam coach held back a crop of 6-year-olds who could probably have competed L3 this year to train L3 and L4 on reduced hours to avoid burnout and injury.