Who I have the same questioned this topic

My V30 battery typically went 30+ hours between charges.  After the upgrade to Android v9 2 weeks ago I'm lucky to go 12 hours.

Google Play Services is always the highest user, by a lot.  

Any fixes coming for this?  Anything to try to fix it while I wait for Google/Verizon to push a usable version of Play Services?

Thanks.