I am so sorry, this is not what I intended to happen when I started this post. To anyone who had trouble for this I'm sorry. I love this forum. I have been using it as reference long before Irwin even came into my life, and I still plan to. I love all of the wisdom that is shared and the fact that people are so willing to help everyone else, and the love of the birds. Thank you everyone for all of your advice.
Back on topic: The very good man from my local bird club came to visit us and it turns out (we're blind) there is a number on Irwin's leg band, it's FLE992. He told us that from the condition of his beak and feet he is not as old as he thought and is probably 6-8 like we were told. The band is open, but I researched it and found out that can also just mean that it was put on later in life. He offered us a trade in case we wanted something more suited for our low experience level, but we love Irwin a lot and we said no thanks. Other than that he said there is absolutely nothing wrong with my bird and he just needs time, which we have a lot of. We plan to keep working with him as we have been every day. We sing to him, play guitar for him, talk to him, and even have a special chair set up next to his cage to get him used to us.
Also for anyone concerned, Irwin is not a test subject. He's a happy, talking, dancing pet bird in my living room. I probably didn't give that post the best title, the "tests" are more enrichment for him (toys), and me too really since animal cognition is my favorite area of study.