I wish I had solutions for you. I admire all you Mom's with small children
and MS. What a combo!

I remember when my boys were this age and it was exhausting
without MS......I can't imagine how you do it.
Is there a teenager in the neighborhood who might like to work for you a couple of hours in the afternoon? Maybe they could help with homework or just do activities with the kids while you get supper ready or rest.
I hope others here have some good suggestions for you.