Not Crawling..?

Jessica • Wife 💍• Girl Mom x2 💕

My sweet girl will be 8 months on Friday, and shows no interest in crawling, pulling herself up, or really being on her tummy in general. When on her tummy, she can push herself up and kind of scoots backwards, sits unassisted, puts weight on her legs when being held up..but zero interest in crawling. Anyone else with an immobile baby? Should I be concerned?