El texto original está aquí
https://connekthq.com/plugins/ajax-load-more/add-ons/previous-post/#implementation
1) Crear una plantilla Repeater Template
2) Insertar en single.php el siguiente código:
<?php
// Our single template (single.php)
// Replace the entire contents of the WordPress loop with the [ajax_load_more] shortcode.
// https://connekthq.com/plugins/ajax-load-more/add-ons/previous-post/
?>
<?php get_header(); ?>
<main id="page-content">
<div class="post-container">
<?php
// The loop
if ( have_posts() ) :
while (have_posts() ) : the_post();
// replaced with Ajax Load More shortcode
echo do_shortcode('[ajax_load_more post_type="post" repeater="default" previous_post="true" previous_post_id="'. get_the_ID() .'" posts_per_page="1" button_label="Previous Post"]');
endwhile;
endif;
?>
</div>
</main>
<?php get_footer(); ?>
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Más ejemplos para excluir posts
https://connekthq.com/plugins/ajax-load-more/docs/code-samples/exclude-posts/
