Sidebar Filters Using Tags

Hey! I understand that Thalia uses tags to automatically add filters to the sidebar like Size_XL, Color_Red, etc. I have added those tags and I can see them on the collection page. However, I also see other options besides the size under ‘Size’. How can I not show these tags and just show the size tags I have? My store is https://74hgysrn0tv3vevu-31766085691.shopifypreview.com