I would give it a couple of days and see how the battery is then. Might be related to the post-update tasks that are making the battery appear worse.
gotcha ill be curious for people's feedback after the dust settles because if im being honest, 16.1 ipsw restore has been great on battery life with my 14PM
Much better than 16.0->0.2->.1 OTA
Went to 16.2 beta 1, then restored to 16.1 -- I doubt anything was left over, but maybe some deep system wide firmware update that cant be reverted from that? Dunno, I think unlikely and more to do with restoring than that possibly but
I'm treading carefully because I have great battery at the moment.