Thanks for the reply,
I was about to make the repo public next week or so, so I'll have to resolve this unfortunate situation I've gotten myself into.
I have a sprite sheet with around 35 sprites (mostly a combination of a bunch of pixel sprites from itch) that I use in the game. Out of them 12 are from this asset page. Can I recreate those 12 sprites by taking these as an inspiration and be able to make the repo public by crediting this page as an inspiration for those sprites?