SNAP recertification with changing income - 16 weeks in

I got a notice asking for proof of income and I am unsure what to send. I have been trying to stay organised about it. There are 3 people in my household. What did you submit and how long did approval take?

Thanks for writing this out. I went through something close to it 2 months ago, and it settled down once I kept a simple log of every call and form.