New shih-poo 8 week puppy moving to raw

I have a one year Shih-poo that's fed exclusively raw. I live in the Netherlands and feed her store bought raw mixes and 3 days a week she has green tripe only. Tomorrow we get a puppy from her parents. Pup is on kibble and I want to get her on raw asap.

I am leaning to an immediate transition, starting with chicken breast for a few days and then gradually changing?

Also want to start including chicken wings to both dogs.

Any suggestions?