Although Payton has been able to go up and down the stairs on her belly for a long time, we have struggled with getting her to walk up and down them with assistance. Sometimes she will do it, sometimes she won't. Even when she will, she bears weight on us very heavily.
A few minutes ago, she and I just walked up the stairs with me holding her hand. She held the wall with her other hand and walked up every stair with hardly any assistance from me. She even alternated feet ... amazing.
It is the little things in life that make us happy around here ... :)