Hi Tess...Yes - you have the right idea about going slow with the switch over. Otherwise you might end up with some nasty diarrhea. I too, adopted my 2 Sphynx girls in September. They are my first with this breed, and I will never be without a Sphynx to share my life with. I so much adore them!
Sammie & Lily are 4, and 5 yrs old. I had a hell of a time trying to find the right food for them. They had very, very stinky diarrhea - actually explosive. It was horrible. They had all kinds of tests done, and I tried several different dry foods & canned too. Finally, I swithched them to raw. It has been an absolute miracle. They poop twice a day - at the most. I know raw is not a cure-all for all cats, but for Sammie & Lily, it was truly an answer to our prayers!