What can I do for my sons adhd without medicating him?

My son is seven years young. He just got diagnosed with ADHD. I am familiar with it, have family members with it. But they are heavily medicated for theirs. I refuse to my son on medication as he’s only 7. What are some tips or advice you can give on how to handle this? We already have a routine set as he thrives on that. Just looking for outside opinions. Thank you(: