While logged in on Reddit, go to this page: https://old.reddit.com/subreddits, then copy the url from the "multireddit of your subscriptions" link in the sidebar to the right, replace the "old.reddit.com" in it with "teddit.net", and bookmark that.

Thank you, that worked. Plus on that multi-teddit page is a convenient table of each sub sorted by name, so one can open it e.g. in a tab.