That's so nice that you have that kind of relationship with your cats. I too love animals (I have posted about my love for dogs, especially the vulnerable ones in shelters. One I used to visit died recently and I felt like a relative had died).
We had two cats in Venezuela. Before I came to Brazil, my mother moved to another city with my sister and the house and cats were left at the care of neighbors. They would move to an aunt's apartment. Taking the cats with us was not an option ☹️

This was the last picture I took of Clementina. It was very painful.
My mother spent a couple of years without going back and when. She went back to our house Clemen was still there. The neighbors say she always goes to her house, that is, our house.

It's good that you know you will come back from your vacations soon and find Cleo. They deserve all the love they can get. They usually give it back