Shopify related products liquid

related_products.liquid

{% comment %}
	Default to the collection the user came from or 
	the last collection found
{% endcomment %}
{% if collection and collection.all_products_count > 1 %}
	{% assign col = collection.handle %}
{% else %}
	{% assign col = product.collections.last.handle %}
{% endif %}

{% comment %}
	override default if there is a related-collection tag on the 
	product
{% endcomment %}
{% for tag in product.tags %}
  {% if tag contains 'related-collection-' %}
  	{% assign col = tag | remove: 'related-collection-' %}
  	{% assign collection = collections[col] %}
  	{% capture limit %}{{ collection.products_count | plus: 1 }}{% endcapture %}
  {% endif %}
{% endfor %}

{% comment %}
	override default if a collection handle was passed in the "with" 
	of the include
{% endcomment %}
{% if related_products %}
	{% assign col = related-products %}
{% endif %}

{% if col and collections[col].all_products_count > 0 %}

  {% for related_product in collections[col].products | limit: 7 %}
    {% comment %}related product html here{% endcomment %}
  {% endfor %}
      
{% endif %}

Quick question, would you know how i can change the below to make it show a maximum of only 4 related products?

{% if settings.display_related_products %}
{% capture limit %}{{ settings.products_per_row | plus: 1 }}{% endcapture %}

{% if collection and collection.all_products_count > 4 %}
  {% assign col = collection.handle %}
{% else %}
  {% assign col = product.collections.last.handle %}
{% endif %}

{% for tag in product.tags %}
  {% if tag contains 'meta-related-collection-' %}
    {% assign col = tag | remove: 'meta-related-collection-' %}
    {% assign collection = collections[col] %}
    {% capture limit %}{{ collection.products_count | plus: 1 }}{% endcapture %}
  {% endif %}
{% endfor %}
  
{% if col and collections[col].all_products_count > 0 %}
  <br class="clear" />
  <br class="clear" />
  <h4 class="title center">{{ 'products.product.related_items' | t }}</h4>

{% assign skip_product = product %}
  {% assign products = collections[col].products %}
  {% assign products_per_row = settings.products_per_row %}
  {% include 'product-loop' with settings.product_sidebar %}
{% endif %}