Something that worked wonders for me was using a different app launcher. This isn’t specific to reddit but just reducing app usage in general. The launcher i used is called olauncher it is a bare bones list of apps. No icons just text. By excluding your browser or reddit app (if you had it installed) the simple barrier of needing to make the conscious decision to open the app is simple but effective. You need to search for an app by name to open it. It prevents aimless habitual app usage. I highly recommending anyone who wants to cut down on aimless scrolling or apps you want to use less often.