GSTR 9 - Optional ?

I am registered as normal taxpayer. I am a goods trader. My turnover is 40 lakhs. I have both inter & intra state transactions.
I have filed my GSTR 9 for last two years i.e. 2019-20 & 2020-21 despite not being mandatory.

Now my query is:
For F.Y. 2021-22 do I need to file GSTR 9 as my turnover is less than Rs. 2 crores but i have filed last 2 years GSTR 9 returns.

Thanks & Regards