The first 100 episodes of this show showed how he was sorted n had clear goals in life.. Being serious about time, business etc.. Moloy considered him as a better business person than nivi.. He didn't interfere much into others lives n led being an introvert.. He took calculative decisions..
Now the same person has been repeatedly being portrayed as a immature guy taking impulsive decisions, not thinking much through his brains etc..
Yes, Prerna leaving has a impact but a person doesn't do 180 degree turn from being a logical calm composed person too..
All these changes just to satisfy the narrative of EK that boyish nature that she mentioned.. If they had to keep it that way , they should have built the story accordingly from day 1