Hi there, I uploaded a video on my ADHD Youtube channel where I go over some helpful tips, remedies, self reflection, boundary setting, emotional intelligence, & educational strategies as to how to manage in a family with multiple family members who have ADHD. Hope this helps, and best regards to you and your family & loved ones!
Youtube Channel - "wilhelm the esoteric" and the video is titled "How to MANAGE in a FAMILY When MULTIPLE Members Have ADHD" (Link to channel is also in my bio). Hope this helps.