Yes.
Unfortunatly he will be lacking of them for some time. I can tell you that there is hope he will learn them just not as fast as we would like.
you see the new treatment is called multimodal and that is when a theripist helps you at school level and at home level and then you get the medication support.
This is sientificly proven to work.
www.help4adhd.org
www.chadd.org
find a support group and get involved. it will change your life.