Hi, Nicole. Welcome to the forum.
I'm a dog person, so don't have any advice about your cats. I hope you find an answer to your problem soon, though!
Meanwhile, though, we'd love to see pics of your furbabies if you have any to share.
"We are--each of us--dying; it's how we live in the meantime that makes the difference."
"It's not what you gather, but what you scatter that tells what kind of life you have lived!"
"Be kinder than necessary, for everyone you meet is fighting some kind of battle."