JMJT
I only do 10 minute increments with my 4 year old. So we start with prayer and religion, then it's off to play for at least half an hour. Then spelling or math, and throughout the week I'll mix in solfege, nature journal, poetry teatime, and sensory tub. My 4 year old is so active it would be painful for all of us to have to sit still for a long period of time. Plus my 3 year old can easily do the same topics (if she wants to) with us without losing focus. 🙂