Enqueuing multiple style sheets in Wordpress child theme - php

Question

I have several Wordpress sites set up and have child themes created for all of them. One of the sites is going to have multiple subsites that will all include customized branding. I have a style sheet enqueued in my child theme with the following code in my functions.php file.
if ( !function_exists( 'chld_thm_cfg_locale_css' ) ):
function chld_thm_cfg_locale_css( $uri ){
if ( empty( $uri ) && is_rtl() && file_exists( get_template_directory() . '/rtl.css' ) )
$uri = get_template_directory_uri() . '/rtl.css';
return $uri;
}
endif;
add_filter( 'locale_stylesheet_uri', 'chld_thm_cfg_locale_css' );
if ( !function_exists( 'chld_thm_cfg_parent_css' ) ):
function chld_thm_cfg_parent_css() {
wp_enqueue_style( 'chld_thm_cfg_parent', trailingslashit( get_template_directory_uri() ) . 'style.css', array( 'font-awesome','swiper','perfect-scrollbar','animate' ) );
}
endif;
add_action( 'wp_enqueue_scripts', 'chld_thm_cfg_parent_css', 10 );
This works fine and my style sheet is functioning as expected. The issue I'm running in to is as I add new subsites with customized branding, the size of this style sheet, style.css, is getting harder to manage. What I want to do is enqueue another style sheet in my child theme for the subsites. I tried to replicate the code above to enqueue the new style sheet, but it does not work. Here is what I added in my functions.php file immediately below the code above:
if ( !function_exists( 'coastal_thm_cfg_locale_css' ) ):
function coastal_thm_cfg_locale_css( $uri ){
if ( empty( $uri ) && is_rtl() && file_exists( get_template_directory() . '/rtl.css' ) )
$uri = get_template_directory_uri() . '/rtl.css';
return $uri;
}
endif;
add_filter( 'locale_stylesheet_uri', 'coastal_thm_cfg_locale_css' );
if ( !function_exists( 'coastal_thm_cfg_parent_css' ) ):
function coastal_thm_cfg_parent_css() {
wp_enqueue_style( 'coastal_thm_cfg_parent', trailingslashit( get_template_directory_uri() ) . 'coastal-style.css', array( 'font-awesome','swiper','perfect-scrollbar','animate' ) );
}
endif;
add_action( 'wp_enqueue_scripts', 'coastal_thm_cfg_parent_css', 11 );
I thought this would work but it does not. I understand child themes but must admin the whole enqueuing process is quite confusing to me. I used a plugin, Child Theme Configurator, to enqueue the primary child theme style sheet.
I've looked through several blog posts and questions in Stackoverflow, but cannot find an answer to the specific problem.
Is enqueuing multiple style sheets like this possible?
If so, what am I doing wrong?