My dd is 13 months and hit all her early motor milestones early- she was rolling at 3 months, sitting unsupported by 5 months, crawling at 6, pulling to stand at 7 months, and cruising by 8months. However she is yet to stand alone. She will walk around with her push along walker or holding 2 hands but cries of I try to encourage her to stand or walk holding 1 hand. She falls down immediately if we try to encourage her to stand alone. Her balance seems to be extremely poor which is a little concerning as I understand she should be standing well before cruising. Has anyone had experience of a child whose development seemed to stall like this?