WordPress: Optimize google fonts download to reduce network requests, conditional load to category && page

optimize-google-fonts-example.php

<?php
add_filter('style_loader_src', 'modify_lato_google_font');

function modify_lato_google_font( $src ) {
    $catch= preg_match('/family=Lato/', $src, $matches ); 
    if($catch) {
        $parts = preg_split('/&subset=/', $src);
        $src = $parts[0] . '|Oswald:regular,700|EB+Garamond,400';
        //error_log(var_export($src, true), 0);
        if(!is_admin() && ( is_home() || in_category(12) )) {
            // Font for Colaboradores
            $src .= '|Raleway:400,500';
        }
	$src .= '&subset=latin';
    }
    return $src ;
}
add_action('wp_enqueue_scripts', 'extract_oswald_google_font', 11);

function extract_oswald_google_font() {
    wp_dequeue_style('Oswald');
}