Some things can't be captured in pictures, so here are some videos of Nathan for you to watch. In this first video, he is counting to 2 repeatedly (1, 2, 1, 2, 1, 2). He can count to 3 now by the way!
This second video shows what a conversation with Nathan is like nowadays.
Last (and longest) is a video of Nathan trying so hard to actually jump (spoiler alert, he never leaves the ground but he has fun nonetheless!)