Venu X1 battery life after 10.63 update

Love the watch but was only getting about 4 days battery life with low to moderate use. Far short of the 8 days advertised although I was ok with it and I know what is advertised is pretty much unrealistic. I use the lowest backlight settings, no wi-fi, simple watch face with low battery draw and all the battery draining options negated. After the update, I am getting even less battery life. Nothing else has changed. Any ideas?