Back Up Baby Sitter For Non-daycare Days!

We have 2-year-old twin girls. Our girls go to daycare normally but there are days where daycare is closed, or the girls can't go due to illness. We are looking for a backup sitter for those types of days specifically! Care would most likely be 2-4 days a month, occasionally more, especially as we head into cold/flu season. We would need someone with availability short notice. We would try to let you know the night before, but sometimes they wake up with a fever and we need someone that morning. We do not expect housekeeping, but light meal prep for the girls would be helpful. We don't have an issue with some screen time, and the girls love to be outside. Even in the cold they love to bundle up for a walk in the sun.