I had a feeling there was a story there dietcoke, thanks. Can't imagine why she would decline 
TBH I think that any expert who claims a new baby should be doing something by a certain age is at best demoralising for a lot of parents.
cf CBC on Breakfast News today that by 8-12 weeks a baby should be sleeping through the night. Yes I was extra cross because her "solution" to the "problem" of not sleeping was formula but would be
even if she'd suggested CIO, cranial therapy or even Green Eggs and Ham! 