How we measure progress at our house

We had a fun physical therapy session this morning at our house. Can your kids sit up on their own and raise their hands above their shoulders? Whether they or can't, celebrate this achievement with me. The twins couldn't do this a year ago, pre-valproic acid drug therapy.

This is "item 4: Two hands to ear level" on the Modified Hammersmith Functional Motor Scale. (We were trying to get him to go from a sitting to a laying position, but he refused. We settled for an up-top high 10.)