Auto-Replenish Check Box to Button

Site URL: https://www.virginsuncare.com/shop

Hello! 

I am looking to create an auto-replenish check box that opens into 3 different buttons (variants for the product).

Here is an example of what I am trying to accomplish https://www.furtunaskin.com/collections/cuore/products/due-alberi-biphase-moisturizing-oil?variant=32361045852195

Let me know if you have any coding tricks to make this happen! I appreciate it!

Thanks 🙂