As someone who has been on the other end of this: He’s not three years old. He has lived a long time without slicing his fingers off. Give him space for his own trial and error. It’s quite possible that you don’t know the best way to do every thing, and you might even learn something new. We learn by experimenting.
I ended up feeling that my SO had no trust in me and that there was no freedom to do anything my way, which took all the fun out of it. I’m divorced and hate cooking now.