Aww mama, ADHD is not something you can prevent kasi it's a neurodevelopmental thing na nasa genes or brain development pa lang, but what you can do is make sure your little one gets enough sleep, regular physical activity, at minimal screen time, kasi a few of us noticed our kids are mas focused at behaved pag well-rested at active. Since you're worried though, better to chat with your pediatrician about it, lalo na kung may family history or if you're noticing specific behaviors na concerning ka na, they can guide you better and do proper screening if needed!