magento2 – How to exclude certain SKU to be calculated in Minimum Order Amount

I’m currently using the native M2 Minimum Order Amount module.

I want to add to my store some products, but I don’t want them to be consider during minimum order amount calculation.

Minimum_Order_Amount = 30

Example
If cart contains some SKU’s
Then Minimum_Order_Amount += itemRowSubtotal

I’m wondering how to approach this problem?
Also I would like to return dynamic error equivalent to change.