I am so nervous about Charlotte's spay. But nowhere as worried as for Billy. We waited quite a while to neuter Billy because he was in and out of hospital for his first year. He was neutered at 1 year and 7 months. Apollo was neutered just before he turned 2 by his previous owners and tummo was spayed at 5 months. M'kwaa was spayed super old by her previous owner, like at 6 years old I think after a mommified fetus was found in her womb.
And we have no clue about Whiskey and Jerry, when they were neutered. But we got them neutered. Both cats had been neutered by 1 year old.