Hi My Son Had Its Ist Afebrile Seizure When He

Hi my son had its ist afebrile seizure when he was 18 month ild which is last for 5 sec after 12 hours he had it again and after 3 hours again 5 sec fits no medication strat yet after the medication starts till now he is 3 years ild no episode of seizure i m giving epition syrup 7.5ml morning n 7.5ml in night
Its been 15 months i m giving epitoin should i stop this or continie to 2 years
Becoz doctors said its should b given to 2 years