I work with a person who has ADHD and is also a fantastic colleague. After we first met the team structure changed in such a way that they were less confronted

I work with a person who has ADHD and is also a fantastic colleague. After we first met the team structure changed in such a way that they were less confronted with most everybody in the department and more working in a more isolated environment. This person has flourished since, possibly as a result of this change. I don't know what size company you work in, but based on the super scientific sample size of 1, asking for a transfer to a more isolated team may help.