We do something similar:

~3 hours of academics per day, 3 days a week.
plus music practice, sports practices, field trips, and weekly co-op (largely fun stuff). The fifth day is for catching up (independently) on anything left incomplete from earlier in the week. Or for lazing around and reading all day.

I expect we could be doing more (you read about these hyper-organized homeschool families who do six hours a day, six days a week, plus farm chores), but I feel no need to do so!

...pronounced like the long vowel and first letter of the alphabet...