Something I've recently played with is a very 'dumb' android browser [0] able only to open and share links (and refresh the webpage), nothing else. Since I don't trust myself that I won't just click links from page to page I also configured the webview's client to disable links [1]. From this, you may be able to restrict yourself as much as you can since you could set a whitelist set of links you find 'indispensable'.

[0] https://github.com/rickgram/NoBrowser

[1] https://developer.android.com/develop/ui/views/layout/webapp...