Changing the title and the label of the Title Post using ACF Form

ACF Form : Change Title Name and Instructions

function my_acf_prepare_field( $field ) { 
	
	if ( is_page('page-name') ) { 
	
		$field['label'] = "My new title"; 
		$field['instructions'] = "My new instruction"; 
	}
	
	if ( $field ) { return $field; } else { exit; } 

} 
add_filter('acf/prepare_field/name=_post_title', 'my_acf_prepare_field');