TDS APPLICABILITY ON FIRST TIME AUDIT CASE

Dear Experts,

Please guide me. 

One of the friend had Turnover from construction business in Preceding FY 2019-20 was -40.00 lacs only & filed ITR U/s 44AD but F.Y. 2020-21 Turnover is 2.56 Cr. & fall U/s 44AB tax audit now. He was not deduct TDS in FY 2020-21.

He is liable to deduct TDS in FY 2020-21?? or From F.Y.20221-22??

Please give me expert advise what will do.