Camera leaving his body in first-person game

[hosh]

Hello. I'm using Vive Focus Plus and building a game with wave unity SDK.

I have a game where the player will just sit on a bed throughout the entire game, I simply place the camera at the "head" position. The problem is when I lead forward/backward my camera will leave the gameobject and "see himself" staying at the original position. What will be a better approach to avoid this weird situation?

I'm thinking should I black out the player's view when crossing a threshold, so as to limit camera rotation? 

Hope I have made myself clear. Thanks a lot! @JustinVive @Tony PH Lin @Corvus