Regarding OBC Non-creamy layer

Respected Sir, 1> My father is a high school teacher in state government in Odisha and the post is of Class- C. He is the only source of income in my family. His annual income from salary of high school teacher in this year is above Rs 6 lakh and the previous two years are below Rs 6 lakh separately. This is the only source of income in my family. So the income from other sources is zero and My family doesn't possess wealth above the exemption limit. So will I be treated falling under OBC Non- creamy layer? 2> In Odisha the column to write the last 3 yrs income is not there. Only there is one column to write the Gross Annual Income and saying to submit the last three years income tax returns. So what should I write in -the previous one or the minimum income of the last 3 yrs income or the average of the last three years income.I am confused. Please explain me the criteria of this case that I can get clarity on it. Thanking you.