My daughter is 7 months old. She can roll, sit, and almost stand independently. However, she doesn't crawl, nor does she know how to get into a sitting position from her tummy. I know all babies develop at their own pace. However, I'm wondering if there is anything I can do to help her learn these skills? She seems to have weak arms (probably because she loves to stand and sit so much). Is there anything I can do to help her strengthen her upper body?
TIA