I'm going a little off topic here but I think it'll be helpful - have you seen the I Can Bike camps? It's how 2 of my kids (ADHD/anxiety/hypotonia) learned to ride. I can't say enough good things about it. They attended 'camps' that were held at FCPS middle schools and the students coaches attended school there. It was amazing and so very accommodating. Even with a high level of anxiety/fear, my youngest was able to learn to ride.
I set up a tickler on my calender to check the site for an updated camp list so I could apply as soon as possible. Spots are limited and fill quickly.
https://icanshine.org/