Just my two cents - take it for what it's worth.
And oh - I KNEW there was someone I left out! I'm glad you had the eval done and glad he came out at 22 months. That's pretty close to his actualy age, right?
ETA: In a typically developing child I would expect that progression to happen pretty quickly and once he gets the first part, that second jump will follow not too long after, to "want boots on" then "I want boots on" - you get the picture.