Yes i was reflashing the recovery at every attempt.
I finally managed to do it, but after having fastboot flashing the stock rom to the earliest version I could find:
12.5.1.0.RJOEUXM
Not sure if it is the reason or I just mastered better my finger sequence. I unplugged the usb cable, and then pressed up + power until it vibrated then maintained up button until the Redmi logo. Hope this helps someone.