Hey LemT owners,
No need to make your own screen protection. The Canon EOS 6D DSLR has a 2.86" screen too. Here’s a link to a almost perfectly fitting tempered glass lens. Just offset it a bit to the right to cover the camera or drill a hole if you prefer.
https://www.amazon.fr/gp/product/B07XRDZ6Y2/ref=ppx_yo_dt_b_asin_title_o08_s00?ie=UTF8&psc=1
Happy Holidays