Infinite Scroll > Article Order

The infinite scroll feature on posts/articles is great!

However, I’m finding that the “next” article that loads is not the desired article.

I have a series of posts that create a learning series.
Basically there is part 1, part 2, part 3, etc.

Ideally if you are reading “part 1” and get to the bottom of the article, then “part 2” would load.
But, right now, a different article is loading, which is kind of odd.

Is there a way to control the ORDER that articles load in for the infinite scroll?
This way I can set it up so it’s part 1, part 2, part 3, and onwards.

I did also notice that in the footer of the single post templates, it has “previous article” and “next article”. This is also “not” loading the desired article links in the right sequence. I assume this is all related, but if there’s any way I can control these links as well, that would be fantastic.

Thanks in advance.