Overpayment letter from the unemployment office - 24 weeks in

I received a letter saying I was overpaid about $550 on my claim. There are 5 people counting on me, so I am trying to be careful. I cannot afford to repay it all at once. Has anyone disputed one of these?

Collect your pay stubs and certification records for the weeks they name. Mine showed the error was a date mix-up.

I asked for a waiver and a plan in the same call, and they gave me both forms. It was less scary than I expected.