He likes to climb, but what if he falls?
Encourage him to climb the blocks or slides or steps; if you are around, stand behind him if you see he is struggling in order to break a fall with a head injury. Fatigue level is important to monitor. Remember when your little one first started walking? You encouraged it but stood behind him or her when going up stairs. Never discourage. It is similar. He’s learning and doing SO well. Think empowerment!