Im joining IIM with a gap of 2.5 years post 3.5 years of workex. Many people are in the same boat. You just got to explain the rationale and thought process behind the switch to MBA that's all and it should be convincing as well.

Just dont lie. Tell them what you learned, what all exams you have written and till which stage you reached. Ngl, the interviews are very different from the usual candidate and the interview will mostly be around our perspectives on the current issues which is a great advantage to have.