Yes, there are many people who took a drop for CAT and got selected in IIMs. At this stage, your interview matters the most. So read well and prepare the best to answer ‘what were you doing in the meantime’.
Answer this question confidently because here they are not exposing your weakness but testing your confidence in yourself. Just say that I was preparing to be here for the interview. Further you can claim that all the other candidates who have taken CAT are still at a level same as yours in the interview round. So rather than experience it’s one eagerness and ambitions that counts.
All you need to do is impress the interviewer and you are good to go.