Talk with teachers, school administrators, doctors and therapists. If you are trying to teach concepts and social skills, involve your child in short length activities or tasks, one at a time. Give plenty of time for activity involvement. It is important for family members to work on understanding the special needs of the family member. Planning out activities ensures consistency.
Praise can go a long way.
Use reinforcers when you are working toward appropriate behaviors. Reinforcers might be stickers, television time, hugs, coupons for prizes, and so on. Learn what works but plan ahead. Consistency is the key to disciplining any child and a child with DH is no exception. Set discipline for short periods of time and stick to it.