Adding related blogs

Here's the issue. Whenever I publish a new blog, the format adds three of my former blogs at the bottom that they consider related. But often they are bad choices in that they are linking to old, outdated blogs that are no longer relevant (Much of my content is political). I'd like to change the formatting so it just shows the latest three that I published. I understand ths is doable, I just can't figure out how to do it. I tried Squarespace support, but the videos and instructions they sent weren't help, perhaps because I'm not techh savvy enough to understand the instructions. So if anyone can help, please do. And did I mention I'm not exactly tech savvy, so simple steps are best. I added the url for my latest blog but that's only because I had to. My problem isn't specific to this specific one. I have Version 7.0. Thanks. 

And what is your website address? 

duncanmatheson.ca