Change jetpack to 10min

functions.php

<?php //remove in an existing file
add_filter( 'cron_schedules', 'jp_support_sync_schedule' );
function jp_support_sync_schedule( $schedules ) {
    if ( ! isset( $schedules['10min'] ) ) {
        $schedules['10min'] = array(
            'interval' => 10 * MINUTE_IN_SECONDS,
            'display' => __( 'Every 10 minutes' ),
        );
    }
    return $schedules;
}

function __return_jp_support_10_min() {
    return '10min';
}

add_filter( 'jetpack_sync_incremental_sync_interval', '__return_jp_support_10_min' );
add_filter( 'jetpack_sync_full_sync_interval', '__return_jp_support_10_min' );