Had my first "should she be doing this by now?" today when my DMum said that she thought DD would be sitting up by now.
DD is 5mo (plus about three days). Is she late? I just figured she'd do it when she was able. She can sit up on my knee with my hands at her hips, roll tummy to back and has done a couple of back to tummy rolls. She has strong legs, can stand up for a bit with me just holding her hands, but can't sit on the floor without me sitting behind her.
Should I be encouraging it, and if so, how?