I'm not sure why I didn't think about showing Eaton how to use a kid size knife. Whenever we had breakfast or dinner we used knife but I never really show him how to hold it and coordinate both hands.
Few days ago Eaton found 2 kid size knives and he brought them to me. I was surprised he found them in a higher drawer in the kitchen. That morning we practiced how to use knife and Eaton did a good job. He still needs to find a balance and coordinates two hands at the same time, but breakfast sausage was easy to cut and he didn't wait too long to eat breakfast.