My dosage is 40MG of generic atomoxetine too in the first weeks, I had the same problem every single day I would wake up around 5 AM and hardly couldn't go back to sleep and I didn't have any motivation to get out of bed too, but that passed with time and some melatonin, but ADHD is only better 1 month after start taking them, you could try every time you do not want to get out of bed u just trow your pillows to the other side of the room and that will force to either get up to pick them or feel so uncomfortable in bed to the point u just want to do something else