I really want HDs, but obviously not enough to study. My bad study habits from VCE are showing

Biology - Averaging HD, subject matter is pretty simple, so I can't see the exam being too hard; I just hope nerves don't get to me on the day of the exam... For study, I'm just going to go through the lecture notes and readings, then do the revision Moodle quiz. Probably not going to spend too much time here.
Medical Biophysics - I've got 36 out of 40 possible marks so far in this unit (so HD average), but I struggle with physics so I'm not very confident for the exam. In reality, I just want to pass the unit, but a D would be amazing. HD would be cause for massive celebration, but that's pushing it. Going to really, really need to knuckle down with study for this unit.
Biomedical chemistry - Averaging HD again, and I'm more comfortable with this unit than biophysics, so I'm going for HD here as well. The exam is pretty good (75 multiple choice questions in 3 hours), but there's
a lot of material to know - but at least it's interesting.
Statistics - Averaging D, and I really couldn't give two shits about this unit. Not only is it on the same day as biochem, but it's also dead boring and a poor excuse for maths. I'd be happy with a credit/distinction, but I don't see myself getting HD. I should probably do some work for this, as I have 11 days to study for this and biochem after the biophysics exam.
Therefore

Biol - HD, some time devotion
Biophys - D/HD, major time devotion
Biochem - HD, major time devotion
Stats - C/D, some time devotion