Pulkit is Abhimanyu, reason? Well few days back he was reciting a poem in front of Sona which according to him their father taught them. In yesterday's episode Suman revealed that Pulkit was in her womb when her husband left them . So if we add these two things, then Pulkit learnt the poem when he was in Suman's womb like Abhimanyu learnt about chakrabhyu in Mahabharat😛
P.S. - To cover up may be in future it is revealed that Sona taught that poem to Pulkit saying that it was written by their father but till then Pulkit is Abhimanyu