I tried using this in my catalog_product_view.xml:
<?xml version="1.0"?>
<!--
/**
* Copyright © Magento, Inc. All rights reserved.
* See COPYING.txt for license details.
*/
-->
<page xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:framework:View/Layout/etc/page_configuration.xsd">
<body>
<!-- <referenceContainer name="content">
<referenceContainer name="product.info.main">
<referenceContainer name="alert.urls">
<referenceBlock name="product.info">
<action method="setTemplate">
<argument name="shopmethtempindex" xsi:type="string">Interjar_ConfigurableChildVisibility::product/view/form.phtml</argument>
</action>
</referenceBlock>
</referenceContainer>
</referenceContainer>
</referenceContainer> -->
<!-- <referenceContainer name="content">
<referenceContainer name="product.info.main">
<referenceBlock name="product.info">
<action method="setTemplate">
<argument name="shopmethtempindex" xsi:type="string">Interjar_ConfigurableChildVisibility::product/view/form.phtml</argument>
</action>
</referenceBlock>
</referenceContainer>
</referenceContainer> -->
<referenceContainer name="content">
<referenceContainer name="product.info.main">
<block class="Magento\Catalog\Block\Product\View" name="product.info" template="Interjar_ConfigurableChildVisibility::product/view/form.phtml">
</block>
</referenceContainer>
</referenceContainer>
</body>
</page>
But it is not working. Any help would be appreciated.