Readwise has been really good for me to remind myself of highlights I made years ago. I set aside 30 minutes in the morning to go over a few highlights and write. I think that adding a "random bookmark" every day would be a good idea. Most of the time you say "huh, I forgot I had that" and forget it forever. But once in a while it comes at the perfect time. (Or a few days before/after the perfect time would still be nice)