Your child becomes so absorbed in one activity they can't transition away from it
Timer for warnings, a way to 'save' their progress (bookmark, screenshot)
Hyperfocus is often misunderstood as just concentrating really hard. In reality, the ADHD and autistic brain locks onto stimulating activities because the dopamine reward is so intense. Abrupt interruption feels neurologically like having something ripped away. Countdown warnings and save points ease the brain out of the flow state gradually.
Relevant from age 4 onwards. Hyperfocus becomes more pronounced as children encounter screens and highly stimulating activities.
A parent used to physically take the iPad away, which triggered a meltdown every time. When they switched to 10-5-2 minute warnings and saying 'let's save your game,' the meltdowns stopped. The child just needed time to mentally transition.