Change RSS feed on main WordPress feed from 12 hrs down to 1 hr. ref: https://wordpress.stackexchange.com/questions/6569/decrease-rss-cache-time-in-plugin Use this in event that external services are not picking up blog posts quickly enough in low traffic sites.

change_rss_feed.php

add_filter('wp_feed_cache_transient_lifetime', 'cws_shorten_rss_feed_timeout');
function cws_shorten_rss_feed_timeout( $interval, $url ) {
	if( 'https://<example.com>/feed' == $url ) 
		return 3600;
	
	return $interval;
}