Homeschooling Mother

I've been trying to make it on my own and continue homeschooling my 5 children since my separation/divorce with help from my church and a part time job. My ex suddenly stopped paying child support 2 months ago, and while I wait on the system to catch up with him and collect back pay, I have reached a crisis point with rent and bills due and no idea how to pay.
My oldest: 8th grade
 My youngest: age 3
My girls: 7th and 5th grade.