Moving Shopify "Buy Button" under "Quantity' field in Ventura template

Site URL: https://reed-point-gxzc.squarespace.com/scdproducts

Hi! I'm in desperate need of help. I'm using the Ventura template and integrating a custom Buy Button via Shopify. I need to move the Buy Button under the Quantity field instead of down at the bottom of the layout (see screen shot).
I'm currently using the code below to hide the default "Add to cart" button:
.sqs-add-to-cart-button-wrapper {
    display: none !important;
} 

I'd be so helpful for any help!

Do you still help on this?

I don't see quantity. Can you share link to product in screenshot?

https://reed-point-gxzc.squarespace.com/scdproducts/shield-replace