Thanks a lot and sorry for the late reply. I just had a meeting with the psychologist and got a list of recommended therapists for OCD. My DD's mental health issues are the foremost concern and need to be addressed first.

I'll try with the whole-to-part approach recommended by aeh, especially for math. My DD struggles with the current overly-repetitiveness-and-excessive-assignments way of learning at school.

I don't post a lot but do check the forum regularly. It's been very helpful. Thanks again.