Show to hide 0 minutes

How could I hide the “0 minutes” indication if the reading time is less than a minute?
This is probably the code I should modify?

if($time == "1") {
	if($seconds >= 30) {
		$minutes = $minutes + 1;
	}
	$estimated_time = $estimated_time.' '.$minutes . ' minute'. ($minutes == 1 ? '' : 's');
	}
	else {
	$estimated_time = $estimated_time.' '.$minutes . ' minute'. ($minutes == 1 ? '' : 's') . ', ' . $seconds . ' seconde' . ($seconds == 1 ? '' : 's');
}

https://wordpress.org/plugins/post-reading-time/