Well it takes patience to help your cat switch from kibble to raw diet. Think of cats as creatures of habits. Try first to switch to canned food and then later you can figure out how to switch to raw diet. It takes a lot of patience.
I've read on a forum that it might take up to one year to switch for more finicky eaters.
However don't give up and be persistent. It will pay off. The key here is to teach the cat how to learn a new habit by eating different flavors/textures using canned food. Because the raw diet should not be mono meaning only one type of meat like chicken.