I came to say what sageous had already said. You woud be surprised how easy it is to execute this simple waking up procedure when ur intent is pre-determined to wake up. The alarm clock really becomes secondary.

You mention ur quality of sleep is lacking. Mild and intention also prove useful in this. Intent to rest. And really feel ur muscles and the rest of ur body relax. I do this sometimes and it feels like im not really falling into sleep so much, rather i feel like im half conscious throughout most the night and feel my cells relaxing which feels great. I promise you this is 50% of the key to getting bedrest