Nro to nre fund transfer

I have an NRO and and NRE account within SBI, with net banking facility. Is it possible to transfer around Rs. 63000 per month from my NRO account into my NRE account​ (intra-bank). Do I still have to fill in forms, etc? When doing the transfer, it only requires one click and a password plus OTP to do the transfer online (because my NRO and NRE accounts are linked). It does not ask for forms, etc for the transfer. Is it ok to proceed monthly with the transfer? Is that acceptable?

 

Awaiting helpful replies,

Thanks & Regards,

Ryan