Applying for food benefits after losing my job - 5 months and counting

I got a notice asking for proof of income and I am unsure what to send. It has been weighing on me all week. There are 3 people in my household. Is there an expedited option for people with very little income?

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.