Indexing ACF Sub fields

Hi,

This is a follow-up to this post, which solved the initial issue.

So i’m currently using the below code to index all my the_field instances in ACF I want, which works fine.

I have a builder in ACF, which has the_field of content_page_builder and inside has several the_sub_field which I can’t get to index. Is there a way to get these sub fields to index? I guess it will be slightly different in the foreach perhaps? (simply because it mentions $data = get_field( $field, $post->ID );.

function my_post_attributes( array $attributes, WP_Post $post ) {

	$fields = [
		'short_introduction',
		'practice_areas',
		'qualifications',
		'skills_experience',
		'awards',
		'memberships',
		'hero_image',
		'hero_text',
		'content_page_builder', //the_field
		'text_block', // the_sub_field - not indexing
		'narrow_text_block', // the_sub_field - not indexing
		'alternating_call_to_actions', // the_sub_field - not indexing
	];

	$ourdata = [];
	foreach ( $fields as $field ) {
		$data = get_field( $field, $post->ID );
		if ( ! empty( $data ) ) {
			$ourdata[] = $data;
		}
	}

    // Get the field value with the 'get_field' method and assign it to the attributes array.
	$attributes['acf_fields'] = $ourdata;

    return $attributes;
}

add_filter( 'algolia_post_shared_attributes', 'my_post_attributes', 10, 2 );
add_filter( 'algolia_searchable_post_shared_attributes', 'my_post_attributes', 10, 2 );


/**
 * @param array $settings
 *
 * @return array
 */

function my_posts_index_settings( array $settings ) {

	$settings['searchableAttributes'][] = 'unordered(acf_fields)';

	return $settings;
}

add_filter( 'algolia_posts_index_settings', 'my_posts_index_settings' );

Many thanks!