I have $recent_posts array with a 'posts_per_page' that look like thah:

<?php
  $num_per_page = 3;
  $recent_posts = wp_get_recent_posts(array(
    'posts_per_page' => $num_per_page,
    'post_status'    => 'publish',
    'orderby'        => 'rand',
  ));
  foreach($recent_posts as $post) : ?>

I would like to add a button that can expand the posts amount in a 3 at a time in every click on it..