Relief U/S 89

Dear sir,
I have received arrears of SALARY in FY 2016-17 and I am filled IT Return without claiming relief u/s 89 and without filling form 10E. Same issue was happened in FY 2017-18.
Recently I am knowing about relief u/s 89.
My question is can I calim relief now by filling REVISED return of both the year and by filling form 10E ???
Intimation u/s 143(1) of both years have been received.
Your reply is valuable for me.
Thank You.