Try homeopathy for him it will definitely help him a lot

Its good u noted his status and hopefully kid is under guidelines of child learning expert. He's just issue with sleeping or may be hungry or willing to play with parents as most of modern parents work...in full stretch of day.... Ayurveda offers amazing outcomes with such issues and sleep is most important for overall growth and development so take it head on

Add 2 tsp of melted ghee in his every food time. Wet with generous amount of ghee over scalp before sleep daily. Use a old thick cloth to protect the leakage of ghee from his head to bed. . Apply and massage his both feet with ghee before sleep. All  care should be done by taking his attention.. by love and affection with patience.