March 2021 Contract Tunrover Not SHwon in GSTR -3B Till Now

I have not shown Turnover Rs.10000000/- contract value in 2020 - 2021 GST and i have filed my GST retruns Till Nov 2021 now only i know that i have not shown that amount and can i show the amount in GSTR 9 annual retrun and pay the  output tax Rs.1200000/- through ITC bills in DRC - 03 i am having excess upto 600000/- in ITC at the end on March 2021 and pay the balance through cash along with interest in annaul return kindly suggest me do the needful