Shopify Collections to Meta Commerce

I am currently adding and deleting shopify products within specific collections, then making them available to Meta commerce collections for our facebook and insta account
My problem is that everytime i delete and import new products for my shopify website, the products dont automatically post into the categories on facebook / Insta store,
I need something setup so that when i update products it automatically send it to the right categories in Meta, without me having to update it manually