If he cannot control his attention, neither can you.
If his inattention - and the negative feedback he gets from it - are distressing to him, then it's appropriate to have him evaluated for ADHD.
My son was "maybe gifted" at 6, and turned out to have ADHD and extreme giftedness. Watching his struggles and fighting through devastating baggage from delaying diagnosis make me a strong advocate for identifying - or ruling out - ADHD first.
If ADHD is ruled out, then you can move forward confidently with parenting tips. But if he has ADHD, there is much emotional and social damage which can be done - and I'm not sure it can be reversed. Time will tell.
