Where can I get a free diagnosis for ADHD in Alief?

I've (35F) been with my husband (35M) for 15 years and I'm lucky to have someone like him in my life. The ADHD thooo.

He has time blindness, forgetful, over accommodating to other people, can't really hold a job for a long time.. etc..

He's so fucking smart. Like when he was a kid he took apart a computer and built it back together again to teach himself how it worked. He's self taught in so many things and he's so sweet helping anyone he can and when he can. A very devoted father as well

I get frustrated and I need this confirmation for him. I need his mind to stop torturing him. I know that I know him.. but I feel like there's a part of him that I still have yet to meet until he gets the medication he needs to really be the man he wants to be.

Please if anyone has any resources or know of any clinics where it'll be easy to set up an appointment and get a free diagnosis or cheap. He doesn't work right now and I'm only part time at Home Depot.

Thank you