my baby is 15 months now .she started walking at 13.5 months by few steps.for past 1.5 months she is walking only by holding my thumb.she used to walk independent 2 weeks before,now not trying to walk independent always walk by holding my thumb.i think she don't have confidence to walk independently.all other milestones are normal. what can I do for her to walk by her own? I am eagerly waiting for her independent walking. please reply