Yea I'm afraid autumn won't be accepting but I've taken the steps to help that.

Second litter box for Dewey Separate water and food bowl He's staying in my room separately during the night/ part of the day when I'm not home. A separate bed and blanket that's his only and Autumn has her own bed.

Read up on it, there is a lot of information on how to do it properly. Just keep in mind it can take a long time for the new kitty to be accepted. I added another one to the family a few years ago and she was tolerated for a year and now they'll snuggle and play together....not as much as the kitten would like but sometimes.

Read up on Jackson Galaxy's guide to cat introductions. I foster and have 2 cats of my own, so I go through the process a few times per year, and I still pull up his guide every time as a refresher.

Secondly, if you have an adult cat at home and want to adopt another, most cat experts recommend either a single adult cat or a pair of kittens, never a single kitten. Kittens are bursting with playful energy, and even a playful adult cat is unlikely to want to play as much as a kitten. When you have a pair of kittens, they can play with each other, while a single kitten is more likely to be annoying to your adult cat.