Add more related posts

Hello,

This is probably the best free theme that I’ve ever used. In fact, I’ve used a number of premium themes and I think that this one may beat the majority of those. It may not have all the bells and whistles, but honestly, fancy things like parallax can just slow a site down and get in the way of content.

Okay, so my question. Is there any way to add more related posts to a post? I found the CSS to shrink them down, but would like to have 5 or 6 related items below. I know that it drops down to 2 items when you switch to a mobile, so maybe it’s more difficult than I thought?

Any help would be great. I’m using a child theme, so I shouldn’t break it too badly.

Thanks in advance,
KW