Enable Excerpt in Page
By default, you don’t get the excerpt field on the page. If there is no option to enable the Excerpt filed in the Screen Option, you can just add the below code in the
functions.php file of your theme to enable it.
// Adding excerpt for page add_post_type_support( 'page', 'excerpt' );
After adding the above code, you will get an option to enable Excerpt on the page as well