Hello! I’m here again

Today my kobo glo’s charge ended. From 100% charge I used it maximum 2 weeks with suspend (not power off) mode every time (usage: about 1 hour per day, 2 days about 2-3 hours). Before, I usually used power off in nickel, and battery ended up in a month, that's why now I'm going to power off each time, but I can not do it from koreader itself.
I’m asking developers: could you add to koreader a
proper power off function to the short slide button. Maybe , realizing by possibility of switching from suspend to power off… Now in koreader power off works with a long slide, but it does not work correctly. When I long slide - koreader/reader shuts down, but it doesn’t remember the last page, I guess it powers off in a wrong way - after 2-3 such long slides koreader reseted all the settings. As I wrote before, I use KSM, if it helps. Please consider my suggestion. Sorry if I’m annoying.