My son is getting stubborn day by day more after the birth of his little sister. he is not concentrating on his studies, kuch samjhao to behas karta...koi baat nhi sunta...padhayi se bhag raha...pyar se bhi bht samjhati hun us waqt to haan kehta but for se waise hi behave karta .... bht misbehave kar raha...kuch bhi kaho to nhi sunta even subeh brush karne ko bhi bolo to use achha nhi lagta irritate hota na bolo to aisehi baitha rehta... bas tv aur mobile chahiye usko ... mana karo to irritate hota h...kaise samjhaun main bache ko.. pls anyone guide me