J.O.
Oh wow, as I was reading my thought was simply that once the kids (age 2 and up; we start with early preschool and a lot of it) are in school, I can tackle all that. But if you homeschool, then, yeah, you don't have that time. :)
I would take time to lay down. But if the kids are always underfoot, that's hard. I always slept almost 24/7 the first trimester (even with the kids around, they played by my feet). Second I organized closets due to crazy energy, and no naps. Third I was napping/resting a lot again. With #5 it was the hardest b/c then I was caring for 4 kids, not much older than toddlers, plus the current baby who was 1. I never prepared any food. We live on cereal or whatever, a lot. Healthy stuff but it takes 0 minutes of my time. I don't have time to think about food!
Take time to rest! Good luck! :)