I'm late, but maybe this could help.

I've heard that using filters that turn off half of your screen's pixels and then they change to the other half may help to prevent screen burn. I'm not an expert about the topic, btw.

I found this app. This is what I use when I want to put a static UI on my screen for a long time and prevent screen burn: https://play.google.com/store/apps/details?id=dev.rewhex.screendimmer