Bs Navmenu and Custom Menu Item

I am working on a project for myself. I am using bootstrap and navwalker to make the navmenu. The thing is that I added the cart custom menu item(the icon with item number and price) using functions.php( with ‘wp_nav_menu_items’ ). Now if I click the minicart, the li of this element doesn’t recieve the active class. I am assuming that this is because this menu item is not created with the navwalker. Any suggestions on how I could integrate this custom menu item to work properly and to be “active” when clicking it?

The page I need help with: [log in to see the link]