I think I would risk overriding fathers consent and have him evaluated. What would happen ? Jail? I don't think so.
This little guy needs help for whatever is wrong with him. And you do need to rule out physical causes.
I am glad your new approach temporarily helped. But it seems he was unable to maintain. I don't personally think this is simply a cry for attention. He needs professional help in my opinion and early intervention beats waiting. It saved my autistic son's quality of life.
Lots of luck! Love and hugs too!
