[This was kind of wholesome, to be honest. He watches Ken with a watchful eye, and some part of him can't help but chuckle a bit at the struggle. Not that he wasn't patient -- he was, and he takes a step forward so that he can ensure that Ken can actually cut the potato, rather than his fingers.]

Yes. With a little more pressure.

[That knife was particularly sharp, but he still knew that potatoes needed a bit more force to deal with. So he makes a motion with his hands to show the proper pressure, which. Honestly makes him feel a bit silly, but he is still a parent at heart, so he'll do these silly things. Even though Ken isn't really a child.]

You will not cut the cutting board if you add more pressure. You need not worry.