From when I need to start complying with GST Rules

Tax_Noob (Taxpayer) (39 Points)

29 December 2021  

As per GST rules I only need to register for GST if my annual income exceed 20 Lakhs, my income exceeded this limit for FY 21-22 this month (Dec 2021). I need register for GST and start filing GST returns right now or have to wait till next FY and start GST return from April 2022?