While the course may seem brutal go easy on yourself. Aim for a passing grade. It really isn't important if you come top of the class, complete the class with a passing grade.
Time management wise I suggest you list your current responsibilities and priorities. Bulk them up if you can. E.g. Lunches... If you pack your own and you prefer sandwiches for lunch prepare a weeks worth in one go and pop them in the freezer. Place them frozen sandwich into your lunchbox the night before you go to bed. That will free you up a lot.
At the end of the class take 5 minutes to review your notes in the class. That way any homework assignments are easier to complete. Make sure you have a note book that you record your assignments in. If it is one that carries over for a couple of days keep moving it to the current days page. (just spending 20 minutes on it putting down information in point form daily, will get the assignment closer to the final product before the due date?
Block in 30 to 90 minutes daily where you can work on revision and homework. You might have to make it 3 x 30 minutes which is actually ideal because it gives you time to reflect and incubate the information.
Take it one day at a time. Just do what you need to do today. Let yesterday and tomorrow take care of themselves for the time being.
Find a way to step back from things that bother you. Enjoy a paraliminal if you need to reverse some frustrations.
Less than 20 days to go to complete the course afterall.
Alex