developing interest in c.a doesn't require that time if a person sits with a knowledgeable person for few days like seniors interest can be created in that way and when person goes into preparing essay his interest starts to build up . Im sure that you have heard stories of candidates who cleared css in short span and they were doctors those doctors who doesn't know anything else but medical . Even i didn't had any interest in the subject but managed to clear with good guidelines . well there are always two or three theories regarding everything so bro you are good on your point