How to insert data into nested fields in groups

I’m trying to insert a value into a group of fields in an acf array from another post entry.

$post_field = get_fields($id);

    $result = wp_insert_post(array(
        'post_type' => 'institution',
        'post_title' => get_post($id)->post_title,
        'post_status' => 'publish',
        'meta_input' => array(
            'author'        => $post_field['author'],
            'primary_info'  => $post_field['primary_info']
        ),
    ));

Here $post_field['primary_info'] is an array:

$post_field['primary_info'] = ["full_name" => "name",
 "short_name" => "short_name"]

And in the post type "institutes" – a group of nested fields.
A new post entry is created in the institutes, but only the "author" field is filled in, and the "primary information" field group remains empty.

'meta_input' => array(
            'author'        => $post_field['author'],
            'primary_info_full_name'  => 'name'
        ),

This solved the problem, however I have a lot of fields in the group, so it is inconvenient

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