grid post change?

I translated this text with ChatGPT.

Thank you for the really fast, clean, and cool theme.

I have one feature that I want to modify and try out. Is it possible to rearrange the 3 posts at the bottom of the landing page so that it shows the top 3 posts followed by the bottom 3 posts?

It seems like it’s possible to add as many posts horizontally, but I’m struggling with arranging them vertically.