Rolling and crawling

My LO will be 9 months on April 1st and has no interest in rolling or crawling. He has rolled, but doesn’t do it. And he can scoot backwards and side to side, but never forward. If I put a toy in front of him to motivate him to crawl, he manages to get the toy by moving backwards and sideways. I guess I’m just curious if anyone has a perfectly content LO who doesn’t crawl or roll? He loves sitting up and standing. I’ll bring this up at his 9 month check up (which will be online because of Coronavirus) April 3rd.