As always, I also promoted this article in my DeHaan Services blog ("Beyond the Bounds of Natural Numbers at Decoded Science").
Set up a series of articles: it saves time.
You should save time because you don't need to rack your brain for new topics. You definitely save time if you just continue your research in one session. You might save time if you can re-use images. If you absolutely need to pad your word count, remember that you have to recap just a bit, include a back-link, and perhaps add a tease for the next article.