Urgent tax query

Mmy dad is contractor and his turnover for the last year is around 97 lacs does not come for tax audit and i m a ca final student.Last yr my dads ca showed me as my dads material supplier to reduce tax and current year as subcontractor n paid tds u/s 194c on 8 lacs .first time i m gonna pay it return for both fy 11-12 and 12-13 .In my view the above tax strategy is wrong.I need also professional opions from members.Thank you.