You dont have to study surgery and medicine in 3rd year really... But You should give a lot of time to Pharmacology and Pathology though followed by forensics too.
Pharmacology:
Should know the theory behind how things work, IE the Physiology and how the drug corrects the problem. Then should know the classification of all drugs, the prototype followed by the different generations. Doses arent imporant except in TB, Malaria and a few others liket hat. Know side effects really well too. And ya you have to remember all of it so start revising it all now its all memorization like anatomy kinda.
Wards just attend them nothing to study for now.