Budgeting tips when income drops - 9 months and counting

We are a household of 7 and the budget no longer works. The rent is fixed and the car payment is high. What helped you?

Sell things you do not use. I made about $850 from a weekend of listing.

Thanks for writing this out. I went through something close to it last year, and it got easier once I kept a simple log of every call and form.