7 month old can't sit up yet, should I be worried??

[Mamabear3017]

He's dragging himself, flipping over both ways. Says mum/dad but can't sit up & doesn't try.

Should I be worried about his development??

They are not supposed to be able to do this until 8 months. Try propping him up with cushions that should help. He sounds very mobile you better get baby proofing soon!