Diagnosis in a hospital

Yesterday, I went to the hospital with my wife and son.
His doctor said, "His skull fracture is completely mended and you don't have to go to the hospital anymore. Take care of him."
We thanked him very much and we were so happy!

My son, he is one year old boy. is one year's old (typically we go by months up to around 2 years old, so you'd probably be better saying "my son is 12 months old.")
When he was five months old, he fell down from his bed and his head hit the floor.
He was crying hard.
We were in a panic and we went to a hospital next day.
He got a CAT scan.
A neurological doctor said, "He's got a linear skull fracture. It usually recovery heals naturally, but be careful of him head." (you need to explain what he needs to be careful with - can he play sports? Dance? Wear a helmet?) I suppose you can just say "make sure his head is well protected"

Gomen, I'm also an English university instructor, so I'm sorry if I am strict!

Diagnosis in a hospital

Yesterday I went to a hospital with my wife and son.
His doctor said, "His skull fracture is completely mended and you don't have to go to the hospital anymore. Take care of him."
We thanked him very much and we were so happy!

My son, he is one year old boy.
When he was five months old, he fell down from his bed and his head hit the floor.
He was crying hard.
We were in a panic and we went to a hospital the next day.
He got a CAT scan.
A neurological doctor said, "He got a linear skull fracture. It usually recovery recovers naturaly, but be careful of him with his head."