One can look to other periods in history, and see if there could be similar lag then. (realclimate.org)
Once your baby is steadily gaining weight and reaching developmental milestones, it's OK to let her sleep as often as she needs, even during other periods of rapid growth. (howtoadult.com)
Moms who reported depressive symptoms or episodes during other periods of their life also had poorer quality relationships. (mommyish.com)