I hope you are getting help and that you tried to call the new 988 number.Did you know that there is a link here at the upper left of the screen for emergency fund drive information. They maybe able to help you out with funds for your cats to be boarded our animal hospital has boarding and vet hospital attached to them. Don't know if your vets office does boarding. If so they could give the insulin and watch the others for you.
hope this helps.