L.B.
My two year old couldn't jump, hated stairs and didnt like playground equipment. I just figured he wasn't the athletic type, but had him evaluated at the suggestion of his nursery school. Turns out he qualified for PT. I was surprised, because I thought Early Intervention was for kids with really serious problems, and if you saw him play, you would think he was normal. He just avoided jumping and climbing. It's definitely worth pursuing, especially before he turns three. If he qualifies for services, take them! Btw, I find it hard even now to get my son to practice jumping, but the PT uses those big Pilates balls and trampolines to get him to practice the motion. He still can't get his feet off the ground by himself.