[susannella]

From my experience, babes develop at drastically different rates. For instance, my SIL's son didn't crawl until 9 mos., but crawled at 10. Some don't walk until well after their first bday.

I think it's normal to be concerned. I know I would be, even though I know how diverse development patterns are.

That said, I know zip about the medication and condition you described. Perhaps mamas with specific experience will chime in.