magento2 – Magento 2 sort product in catalog product list based on product attribute option position

I am working with Magento 2, I need to sort the product on category page based n product attribute.

1. Product attribute type is dropdown.
2. I will sort the option while creating attribute.

Now in front if I select this attribute product should sort based on option position.

Example :
Product Attribute name : Test

Attribute type is dropdown.
Option 1: sort1
Option 2: sort2

I have two products. Both has diff value assign. Now if I change the options position it should sort accordingly in frontend.

Thanks in advance.