Smooth rotation for actor's head when going from one max angle to the other

Hello, I am trying to implement head movement based on where the camera is looking in my third person project. I have successfully added it, the only issue is that I can’t figure out a way to make the character smoothly look from one max angle to the other. For example, if I’m facing the third person character with the camera, their head turns all the way to the left, and if I slightly move the camera so they would begin looking right, their head just snaps to the right instantly. I want a smooth movement.

Here’s a video example of what’s happening.

Help is appreciated and keep in mind I’m pretty new to UE4.