I have the exact same issue re. IR reflection from a brick wall. I tried designing my own wedge but it was too expensive to print.
Can you post a couple photos of your wedge & doorbell mounted? I'd like to see how snug the fit is with the doorbell. Perhaps before/after shots of the IR reflection from the Ring app?
Lastly, how sturdy is the mount? I'm nervous somebody could just rip the mount off the wall. Is there any wobble/give in the mount? Thanks!