That is great news!! he needs a way to safely get into the pool a ramp or steps made out of scrap wood would work. But it would be better for his legs not to have to jump off the side. The reason saying is my Muscovy drake injured his legs jumping off the side of the pool so best to keep that from happening. I put a dog x pen around all my pools except where they can safely go in and out. that way I don't have to worry about them jumping off and hurting themselves.
Your care is what brought him through bless you for caring