For the next 10 topics in the matrix, create a recording of you teaching on that topic, just as if you were writing, except you are speaking. You can even think of it as though you are dictating it to someone else to type in. But the key is that you end up with 10 short recordings (maybe 5 minutes long each) instead of 10 500 word articles . . .
This exercise is going to allow you to compare the product creation method of writing with the product creation process of recording.
Neither is right or best, but one way might feel better to you and be easier! but usually most folks don’t know until they create 10 pieces of content using each method . .