I want to thank everyone who responded/read this thread. I really appreciate the support.

@BirdDancer, our child started on all the therapy as soon as he was eligible and is in a good school for his autism. He's developing like a normal child with ASD.

I've been reading as much as I can on basically any material. I started reading https://www.amazon.com/When-Someone-.../dp/1593856083 and I find it very helpful. I'm open to other reading material.