REGARDING LUT

Shoeb Hasan (81 Points)

06 June 2020  
i had 2 exports in the year 2019-20 without payment of tax, but didnt furnish lut.
so can i furnish lut for 2019-20 now?
export was in jan 2020 and i have not file gstr 1 and 3b for jan feb mar 2020 yet
please help