I've that problem too, big time.
I got Melatonin prescribed. It's for sale 'over the counter' but then there's only 0,2 mg in the tablets, I got 5 mg. (I'm talking about in the Netherlands of course)
Melatonin is the stuff your brain makes and that's making you sleepy in the evening and wake up when it 's getting light again, so takes care of a 'normal' rythm.
It works for me, is not addictive and I'm fit and wide awake in the morning, not drouzy or sleepy at all at daytime.