Is he crawling now?
No, not yet. But he seems to be very close. He easily pushes up onto his hands and knees, and even lifts his butt up in the air by pushing off the ground. But he hasn't figured out yet, that to move forward, he has to move his arms forward. He keeps them planted in the same spot. I'm convinced he'll be crawling on his hands and feet (instead of knees) because of how much he pushes up onto his feet.