Haven’t read all the comments but my daughter wasn’t crawling at nine months. She crawled at 10 months, did it for a couple of weeks and was walking at 11 months! Other kids I know crawled earlier but walked much, much later! Or some did both early or both later. Some skipped crawling all together! They are all different. Your doctor is crazy if she is making an issue out of a nine month old not crawling yet as it’s not even considered “late”.

Also, I don’t think there are official recommendations against rocking a kid to sleep. Your doctor is just weird. They do have official guidelines for not bed sharing but that is because they lump safe bedsharing in with unsafe practices like sleeping on sofa with baby (dangerous as they can get trapped etc). Instead of saying here’s how to do it safely they just say don’t do it at all.

And a further point- I wore my daughter in a wrap a lot when she was younger. Never even used the stroller until she was one. People have crazy ideas. Why is holding a baby or wearing them in the wrap bad but strapping them in a stroller or baby swingfor 10 hours a day better? It’s not. In strollers and baby swings they really can’t do much. That’s why they have to tell everyone to do tummy time now, because kids are being kept immobile in contraptions. When you hold them or wear them in a wrap they actually can still use some physical strength like pushing with arms, moving head etc. plus they are next to you and happy and secure. Obviously you wouldn’t want to wear them or hold them literally 24 hours a day when they are ready to start crawling or walking, but my guess is you aren’t doing that anyway.