I have a Collection with categories.

On a Collection page I am displaying the Collection's items by category. Setting count on the bellow function would limit the categories - is there a way of placing a limit on the collection items themselves per category?

knowledge_base.php

<?php
  perch_collection('Knowledge Articles', [
    'template' => 'cpi/listings/knowledge_archive.html',
    'sort' =>'_category',
  ]); 
?>

knowledge_archive.html

<perch:if different="categories">
    <perch:if exists="perch_item_first">

    <perch:else />
                </ul>
            </div>
        </div>
        </div>
    </perch:if>

    <div class="large-6 small-12 columns">
    <div class="card card-5">

            <h3>
                <perch:categories id="categories" set="departments">
                  <a href="/knowledge-base/<perch:category id="catSlug" type="slug" />" class="p-category">
                    <perch:category id="catTitle" type="text" />
                  </a>
                </perch:categories>
            </h3>

            <div class="card__menu">
                <ul class="side-nav">

                <li>
                    <perch:categories id="categories" set="departments">
                        <a href="/knowledge-base/<perch:category id="catSlug" type="slug" />">
                        <span class="cat__icon"><i class="ss-icon">&#x27A1;</i></span> 
                        View All Articles
                        </a>
                    </perch:categories>
                </li>


</perch:if>

<perch:every count="-n+5">
<perch:else />

<!-- Can I place a function in here? -->

                    <li>
                        <a href="/knowledge-base/<perch:categories id="categories" set="departments"><perch:category id="catSlug" type="slug" /></perch:categories>/<perch:content id="titleSlug" type="slug" for="title" label="Slug" editable="true" order="2" />">
                        <span class="cat__icon"><i class="ss-icon">&#x1F4D3;</i></span>
                        <perch:content id="title" type="text" label="Title" order="1" required="true" title="true" />
                        </a>
                    </li>

</perch:every>