I’ve heard some people doing the water + cup method where you damp the corner with water and then leave a cup on it and it will reposition the corner to stay down. But that is only when the corner has actually come up and you want to fix it and it sounds like you want to be proactive and prevent it from coming up in the first place?

Perhaps there is some other type of adhesive you can use to keep it down but bring up when needed? My mom used to use this blue gum like substance that would hold things to the walls in her classroom. It didn’t leave residue and would come off with little ease on your part but keep things held onto the wall. That may work here? She used to get it from office supplies stores and it legit looks like gum. Can’t remember the exact name of it.