Every time I plan to go to bed early, I have troubles in falling asleep and end up sleeping even later than usual. So there goes my plan to go jogging tomorrow at dawn.
The human body “remembers” the regular sleeping time. For example if you always go to bed at midnight then you will have problems to fall asleep at 22 h. Same with waking up times: If you wake up at 6 o’clock in the morning from Monday to Friday, you will also wake up early (around that time) at the weekend. So the only thing you can do is to “train” yourself slowly to get earlier into bed. For example if you used to go to bed at midnight, then go to bed at 23:45 for one week. Then the next week at 23:30 and so on.
The most important thing: Don’t try to fall asleep. If you focus on the fact that you can’t sleep, you won’t fall asleep. Instead tell yourself that you don’t have to sleep and just to rest a little bit. Think about a past vacation or other interesting, positive things (or things that you like post in this forum).
Is that important? Are the weather conditions too bad to jog later (is it too hot in Switzerland too)? And why don’t get up early and then take a nap at noon? The human body is able to catch up lost sleep (to some degree) but you can’t bank sleep in advance.