Change of entity status in FDs

Dear Experts,

We were an Association(AOP) with a certain PAN, having FDs in a financial institution. Towards the end of FY' 20-21 ie in March 2021 we got registered as an 1860 Act Society. We wish to file ITR for the same year ie FY'20-21as a Regd Society and claim  tax concessions available to Societies under section 167B(2) !

Is it possible,considering that the status was changed to Society only in the last month of the FY Apr to Mar 2021 !

Thanking in advance pl !

Johnykutty