Something to consider aside from the meds is the biological sleep cycle that you may have. For example, I am truly a night owl. I am much less sleepy on fewer hours of sleep if I stay up late and sleep late. My aunt is the same way. Of course, society doesn't work this way. Sounds like to me if you are sleepy at 3 am and sleep until 10, you've gotten a normal amount of sleep. Of course, you had to force yourself up that day. Do you find you are sleeping more than nine hours on your meds? Not to downplay side effects, but I wonder if this is more a case of your meds helping your body to regulate to its normal cycle, which is not with the rest of the world's cycle?
Roni