Managing inventory when having product options

I’m having trouble with
I have a number products in my Wix store that I keep an inventory on. I would like to add a “Gift box” option to some of these products when the holiday season is approaching. How can I keep the inventory tracking if the gift box has an extra price?

Maybe there is another way to do it? Like adding an add-on for “Gift box”?

Working in
Wix Store Dashboard

What I’m trying to do
Have an add-on option with different price, but no change in inventory

What I’ve tried so far
Adding a product option

Extra context
The product options have this setting: Manage pricing AND inventory for each product variant. I only need to manage pricing, but NOT inventory. Inventory should be tracked from the basic product.