Assistance dog training for adults with autism

Hello, 

I have autism and ADHD and I got a dog as a pet because I thought it would be helpful for me and it has been! She is my favourite thing and she has already helped me loads with lots of things. 

I would like to train her to be a "proper" assistance dog for me because she is very clever and it would be helpful to have her be an official assistance dog. 

I know that there are charities that train dogs for autism support but they all seem to be for autistic children and not for adults. 

Can anybody recommend somewhere that offers this for adults with autism? As a person who was assigned female at birth, despite having lots of struggles throughout my life I only received a diagnosis in the last couple of years so I am a bit behind on understanding help and support. 

Thank you in advance for your help.