This tutorial will show you how to add pagination to your comments in WordPress.
Log into your WordPress admin area and go to Settings -> Discussions.
Next, look at the section where it says Break comments into pages. Select the number of comments you want to have on each page, and how you want to display them:
Based on your theme styling, either you will see a numeric pagination or you will see Previous / Next comment links.
Feel free to check the detailed video tutorial below: