My Series 1 used to last 2 full days. Now when I wake up it's at 40% and will die around 5pm (on the 2nd day). Pretty sure the watchOS 4 update caused the bat

My Series 1 used to last 2 full days. Now when I wake up it's at 40% and will die around 5pm (on the 2nd day). Pretty sure the watchOS 4 update caused the battery life to drop significantly.