Seeking Mandarin tutor/educational therapist for 3rd grader

Hi! Does anyone have a recommendation for a Mandarin tutor who is available for in-person meetings in or around Oakland? My son is entering 3rd grade in a Mandarin-immersion school, and needs one-on-one help in Chinese to get to grade level. As someone with ADHD, he has responded well to one-on-one sessions with an educational therapist in other subjects. Thank you, so much!