I think this approach might have the potential to be problematic if the cameras continue to be aimed at one another. I say that because of my own experience when I first installed Video Doorbell v2.
Long prior to getting the doorbell camera, I had mounted another camera outside to provide coverage for the porch and front of the house, and this (non-Wyze) camera has its own automatic night vision mode and IR settings. When I got the Video Doorbell v2 and installed it, I initially configured it with Night Vision Mode set to Auto. The problem with that was that from the doorbell camera’s perspective, the older camera’s IR looked like a spotlight shining right at the camera, and the older camera’s view looked like the doorbell was shining a spotlight right back at it, so they were both kind of washing each other’s images out. Because I have adequate exterior lighting for the Video Doorbell v2’s starlight sensor, I set its Night Vision Mode to Off, and that solved the problem for both cameras.
In a video I recently posted, you can still see the IR of the older camera mounted under the eave even with the doorbell’s color night vision, but the glare is not nearly as severe as when the doorbell’s IR-based night vision is On. You can also see the IR from the neighbor’s garage camera across the street.
This is why I asked the first question I did: Knowing @aromintz’s ultimate goal should guide the solution.