Newborn back seat mirror

Due in 3 weeks.

I have a headrest on the seat behind the driver's seat, but only that one. I'm planning on having our daughter in the center of the back seat, facing away from us of course. So we bought a mirror so we can see her better as we're driving, but didnt realize we dont have a head rest to keep the mirror on where she is going to be. I tried moving the head rest that I DO have over to the center seat and they're two different sizes, of course 🤪

Are there any recommended baby mirrors that aren't suction or need to be strapped to a head rest?

I currently have a 2009 Nissan Murano (SUV) with a 2nd row back seat, no third, but also a cargo area in the very back (so suction wouldnt do me any good for the back seat)