AJ has figured out reverse. When climbing the stairs he can back up, feeling for each new step with his foot. Also, the other day, he was on our bed. He tried to get down by leaning over the edge of his bed and feeling for the floor with his hand. After several re-adjustments he still couldn’t reach the floor with his hand. So, he turned around and slid down backwards off the bed (on his belly). He did land feet first, but his feet didn’t hold him. He promptly landed, thump, on his bum. This didn’t bother him one bit and moved on quickly to where he wanted to go. So, AJ now has full steam ahead (on all fours) and reverse, what a clever baby.