add minicart to custom header

 <move element="minicart" destination="Custom_header" before="-" />

 

 

<!--referenceContainer name="page.wrapper" remove="true"/-->
        <referenceBlock name="header.container" remove="true" />   
        <referenceContainer name="page.wrapper">
            <block class="Magento\Framework\View\Element\Template"
            name="Custom_header"
            template="Magento_Theme::html/customheader.phtml"
            before="-"/>    
               
        </referenceContainer>

////*****************************************************************/////////
       
        <move element="minicart" destination="Custom_header" before="-" /> 

/////*****************************************************************///////////

--  Add this in minicart.phtml for instant price change

<span data-bind="html: getCartParam('subtotal')"></span> 

This will show live minicart in custom header

add 1 to customheader.phtml and 2 to default.xml

1. <?= $block->getChildHtml() ?>

2.  <move element="minicart" destination="Custom_header" before="-" />