I take it your bedroom is totally blacked out as near as possible. If not, that's the first thing to do. Even tape over luminous dials on electrical equipment—although possibly removing all electrical equipment from that room and turning off wireless routers and mobile phones would be even better. (EMF radiation looks to have more effect on the body than the industry has been claiming for so long—I see your own government has said that, after reviewing the evidence, it will not allow 4G in the country.)Anything primal, or non would be suggested. This has been going on for a few weeks now, and I am not sure how long I can keep it up...
It's said a short walk just before sunset and another just before sunrise can help. The different wavelengths of the light on the skin at those times of day should help re-sync your bodyclock. Exercise should help, too.
Don't drink any caffeinated drinks after midday. Nor alcohol anywhere near bedtime.
Your bedroom should also be on the cool side.
Take a while to "wind down" before going up. All computers, TVs, etc. off a couple of hours at least before. Keep lights low, prefer table lamps to overhead lights, possibly wear red sunglasses round the house (better wavelength). Warm camomile tea can help. You might also try a small, not carbohydrate-rich, snack before bed, since blood-sugar crashes can wake you up.
Oh, if you do wake up, don't put the lights on, don't look at the clock. Doing those will tend to stymie your ability to get back to sleep.