Dd is 9 months, and is beginning to pull herself upright, and loves being held in an upright position. At her 8 month check, my hv commented that she doesn't put her feet flat - she pushes up on tippy toe and sometimes turns her left foot in. I've been watching intently for the last month, and I've noticed that dd very rarely voluntarily puts her feet flat. Other babies I know, some younger than her, do. Is this something she'll grow out of? Would putting shoes on her some of the time help?