bangle.js 2 battery lasting less than a day

[hhharkness]

so i've never experienced the supposed 2 week battery life, but i did use to get around four days on average. the last few days however i've been charging it in the morning and it's been dead when i wake up the next day. i do use gentle charging, however judging by the battery history it seems to go down slower when i've accidentally charged it to full?
as far as i can remember, the only recent changes are installing the backlite app, changing from the dino clock to my own custom one that's based on the same code but without the weather display, and uninstalling the weather app - all things that i would expect to increase battery life if anything