would you recommend level B for 1 st grade that is advanced? age 6 and half

My main question is about time spent per subject... I don't want to burn us out. For us, we've a 1st grader, and we'd do B.

turning 7 in october

we tested the language arts reading too and was recommended b

approximately how much time per subject or per day does homeschooling take with book shark?

thank you!!