RN10Pro ARB

[GrayG]

Hi all, im in the Uk, My Redmi note 10 pro is a UK version so the rom is codename sweet. After an update the other day my battery life is shockingly bad, i cant work out why its draining so fast and the phone gets really hot when charging. It updated to Miui 13.0.13.0. I wanted to rollback to Android 11 and wondered, is there any Anti Rollback on Uk roms, Eu roms for sweet, i just want to be sure, ive read conflicting posts here and there so need to be sure.
Thanks All.