Gameobject child slight movement

Hello, so I have a bow as a child to the main camera so the first person controller looks like its holding a bow. What my problem is, is that the bow looks fixed, as it doesnt move at all, just with the camera. What I’m want to do is like in real games where the bow goes up a bit as you go up and down as you go down, but at a slight rate.

How would i do this?

You simply need to create an animation of the hand to do that.