I'm attempting to add a button on my home page to show more posts. Currently, I have my posts_per_page set to 9. I'd like to include a button that will add 3 more posts to the loop, but have had no luck finding how to do such a thing.
Please note, I do not want to use the button to redirect away from the home page, simply increase the posts_per_page by 3 each time the button is clicked.
Any help would be greatly appreciated!