My main character, Matthew, is a 14 year old boy who has lost his mother in a car accident. This is a mystery novel for teens. Matthew blames his dad for the accident, even though it's really not his fault. There are several issues going on here with Matthew and his dad. Although I would like to tell the story primarily from Matthew's POV, I believe his dad has some things to contribute as well. Question is: In changing POV's, would it be acceptable to use Matthew's dad's view only 2 or 3 times during the story?