That is also my understanding: You may or may not a "habit person" almost regardless of ADHD, but starting it is harder, and losing it easier with ADHD.

I hope that was the only problem in my case, and we'll see in a couple of weeks.

During therapy it might be best to start, so there is someone who supervises it and calls you out. Maybe being active in a community like x-effect. Any kind of accountability entity.