Try horse therapy. My son was diagnosed at 3. He was aggressive, with meltdowns galore. Then I read a book one day about autism and horse therapy. Horse therapy did wonders for my son! Within a few weeks, there was a big change in him. I am happy to say that he is now 14, he talks, is social, has many friends, and is an honor roll student. Don’t let the diagnosis scare you. I did in the very beginning, then found therapies that worked and found things that triggered his behaviour. The horses were a gift and a blessing! Highly recommend them!