You can talk to the school. They will go over your transcripts and tell you what year you can transfer in or what classes you need to take to enter as a year 3 student. I don't know how many slots they have for transfers, I'd imagine that it depends on how many people are dropping out.
Beware though, I have a friend who did this. She was told she would enter as a year 3, and then when the time came, she was put in year 2 because they said the organic chem she took wasn't a "medical-based" orgo, whatever that means. They have a bit of a reputation of being tuition-hungry.