What hours of study do you do in the day then? because I usually have to go way past 5pm to get everything done. But might try this
I don't count hours religiously. I make a list and work my way through it. Anything I don't get done today is at the top of tomorrow's list
On my list I have set tasks I need to complete, so when I sit down to study, I know what I'm actively trying to achieve.
I wake up at about 7am, have a shower and some breakfast and read the paper. Start studying at 8am, usually take a break about 10ish and have something to eat, have a stretch etc for about 15-20 minutes. Then another couple of hours, and then a 45 minute lunch break. Then another couple of hours and I'm done.