We have a wide age spread too (14, 13, 9, 8, 6, 3, 2). This is what we do:
Everyone does Bible and scripture memory together. We also do a read-aloud for history and literature together. The “fine arts” (music and art appreciation, handcrafts, hymns) as well as a few other things (poetry, map drill, “personal development”) are done once a week together.
Then the older two (high school age) do an extra history book (same time frame as our family one but a “harder/older” book) and another literature book (again, it’s an older/harder one) separately. They also do English (grammar, dictation), written narrations, science, foreign language, math and a few other things separately.
I do science together with all the under 11’s, English with the 6-11’s, some separate younger kids reading books with the little’s (ages 6 and down). All the kids between 6 and 11/12 do separate math, copywork, literature, history readers, science readers, phonics work, dictation on their own.
So for us, our day looks like this:
Everyone starts some independent work as they get up (we let them wake up as they want between 6:30 and 7:30.
Bible/Scripture memory at 7:45 (this year it was 15 minutes but will probably be 30 next year so starting at 7:30)
Literature read aloud during breakfast at 8 (I eat before they are all up)
Chores then independent work until lunch. The under 7’s finish fast, the under 12’s finish before lunch also so they all go out and play or do a quiet activity inside until lunch.
Lunch-sometimes with music appreciation or discussion of something from the morning
Chores, then really littles (under 4) down for naps
History read-aloud as a family for the rest (the 4-6 year olds are in the room but not always participating)
Freetime/quiet time/finish up independent work if didn’t finish in the morning
Snack with “fine arts” and other once a week stuff
This has worked well for us for the past couple years. It gives us a lot of “whole family, together learning” while allowing my older two to get in the needed study for the high school level stuff.
HTH, Rebecca