Appeal deadline questions after an unemployment denial - 11 months and counting

My claim was denied after 21 weeks of waiting, and the letter says I have a short window to appeal. Thank you in advance. The letter lists a deadline and a hearing process, but it is hard to follow. If you have appealed before, what helped you prepare?

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

File the appeal before the deadline, even if you are unsure. You can gather documents afterwards. That is the one part I would not wait on.