1- Life is a trial and this is part of your trial. You have to be strong. A believer gets tested with everything including his children, and so you must stay strong.
2- Your son is not doing shetani things. Some children just have a lot of energy. That’s ok. Later in life they stabilize and become successful, so don’t stress out too much.
3- Sometimes Allah may allow a child to develop autism in order to protect the child from a big danger later in life, so we must consider this as well.
4- We don’t own our children. Allah own them. They are just an amana in our hands. Hence, submit your case to Allah and trust his wisdom.
5- Read this Du’a at least once a week:
May Allah make it easy on you