Hi Yuki! Yeah...it would be a whole lot easier if content stayed evergreen, but that's definitely not the reality. 🙂 To go along with Judy's helpful tips, I wanted to chime in with a few resources that I hope make it easier and save you some time in the future.
- 5 Tips for Building E-Learning Courses That Are Easy to Maintain - I know this is more about prevention, but the ideas in this article might be something you want to do moving forward, such as—Set a Course Expiration Date when you know some information will be obsolete as of a certain date. That way, you don't have to go through a ton of courses to check if it needs updating because you already made a note.
- Course Update Spreadsheet - a Course Maintenance Sheet can be really helpful because you can see a list of all the courses in one place with any notes you need to stay organized. If you do use something like this, I highly recommend importing it into Google Sheets if you have more than one person working on updating courses. This allows everyone to see it and make changes in real-time so you don't have to pass a file back and forth.
I hope that helps!