My baby is 13 weeks old and his hair is so patchy. He had a lovely head of hair when he was born but it has gradually got less and less. Looking at him from the front he looks bald. He does hair hair at the back and sides but it is so patchy. Tonight I noticed his sheet was covered in hair too, it has only been on 2 nights. Is there a reason for this, it seems excessive? Is it normal? It seems to have got a lot worse the last few days. I'll add pictures of his hair too.