Pagination / list length -- how to control it?

Hello!

I'd like to know how to control the list length or if it's possible to enable pagination instead.

I have the module published on the left side of my page; with too many reviews, the list length exceeds the bottom of the component and it looks odd.

I see that there is a button to 'load more' reviews at the bottom of the module -- but how can I control how many reviews are shown before older/previous reviews are hidden? What is the default limit?

Ideally, I would like to show the 3 latest reviews, then on 'load more' these 3 will be hidden, then the next oldest 3 will load. So there are only ever 3 visible at once so it does not affect page length too much.

I would be so grateful if you could tell me which file contains this information.

Thank you for your time and support,
Best,
Ben