Programmatically regenerate cache after delete_cache_by_endpoint

I’m currently hooking into save_post action, and running a function to delete caches. Some of my endpoints are fetching too much data, so I want to minimize actual users hitting those endpoints when uncached. What I want to do, is to programmatically regenerate API cache immediately after cache is deleted. I tried to do this by running the wp_remote_get function to the same endpoint, but it’s not triggering cache generation. Is there a way to do this?

My current sample code below:

<?php

/**
 * Extending wp-rest-cache to include custom endpoints
 * and refresh cache on custom endpoints
 */

require_once ABSPATH . 'wp-admin/includes/plugin.php';
if (is_plugin_active('wp-rest-cache/wp-rest-cache.php')) {

    include_once ABSPATH . 'wp-content/mu-plugins/wp-rest-cache.php';


    function wprc_add_acf_posts_endpoint($allowed_endpoints)
    {
        if (!isset($allowed_endpoints['custom/v1']) || !in_array('all-courses', $allowed_endpoints['custom/v1'])) {
            $allowed_endpoints['custom/v1'][] = 'all-posts';
        }

        return $allowed_endpoints;
    }
    add_filter('wp_rest_cache/allowed_endpoints', 'wprc_add_acf_posts_endpoint', 10, 1);

    function refreshCache($postId)
    {
        // If this is just a post revision, do nothing.
        if (wp_is_post_revision($postId) || wp_is_post_autosave($postId)) {
            return;
        }

        // Verify if this isn't an auto-save routine.
        // If it is that our form has not been submitted then we dont want to do anything.
        if (defined('DOING_AUTOSAVE') && DOING_AUTOSAVE) {
            return;
        }

        $post_type = get_post_type($postId);

        $caching = \WP_Rest_Cache_Plugin\Includes\Caching\Caching::get_instance();
        switch ($post_type) {
            case 'post':
                // Fetch the categories of the post
                $categories = wp_get_post_categories($postId, array('fields' => 'slugs'));

                // Loop through each category and delete cache for its API endpoint
                foreach ($categories as $category_slug) {
                    $endpoint = "/wp-json/wp/v2/categories?slug=" . $category_slug;
                    $caching->delete_cache_by_endpoint($endpoint);

                    // Trigger cache regeneration by making an HTTP request to the endpoint
                    $response = wp_remote_get(get_site_url() . $endpoint);
                    if (is_wp_error($response)) {
                        // Handle error if the request fails
                        error_log("Cache regeneration request failed for endpoint: " . $endpoint);
                    }
                }

                $caching->delete_cache_by_endpoint("/wp-json/custom/v1/all-posts");
                break;
        }
    }

    add_action('save_post', 'refreshCache', 1);
}