SNAP recertification with changing income after 18 years as a teaching assistant

I got a notice asking for proof of income and I am unsure what to send. Thank you in advance. There are 18 people in my household. What did you submit and how long did approval take?

I sent my last two pay stubs, the separation letter and a bank statement. I heard back in about 18 weeks, and my county offered an interview by phone.