Re: starting the switch today
Do you know if he likes it? I kept my cat on half raw half kibble until I knew he would eat meat, bones (wings, neck, ribs, etc. and I smashed them to start), liver and one other organ (kidney). That way I knew he was still getting everything he needs until I could provide it with the raw diet alone. Since he's a kitten I think he'll probably switch pretty easy so I might just go cold turkey and wouldn't be too worried about him refusing anything but if he does refuse something for a few weeks, say he still hasn't gotten any bone or eggshell after three or four weeks because he can't figure it out yet, I'd probably supplement with a meal of wet food or if you really can't afford it, kibble each day until he does learn how to eat the bones.
To start use pieces cut up small. If he'll eat them then you are in luck and can just start increasing the size of the chunks over the week. If he refuses the small pieces then throw one in with his kibble and if he eats it throw in another and when he eats that throw in the rest and see if he'll keep eating. Since he's a kitten I'm going to guess he'll eat it right off but who knows. So as I said give him bigger chunks everyday. Once he is tackling them no problem give him one big chunk that is his whole meal. If he is doing fine with that for two days you can start introducing smashed wings, necks or ribs. Also feel free to add small amount of organs to the meat chunks (I had to sneak them in by making them very tiny). From there just work on getting him to eat those things and then move on to new meats. The gradual increase in meat size is to build jaw strength, let your cat know how fast he can go, if he has trouble make them smaller. That's how I did it anyway, I'm sure however you do it he'll adjust and learn to eat his new food! You are lucky to get to start with a kitten, my Neko will not TOUCH it (unless mixed in wet food so he eats it by accident) because I didn't try to start with him until he was 4.
Good Luck!! tell us how he likes everything.