Degree evaluation with switching?

[RadLife:]

Hello,

I was wondering how Ontario medical schools would look at a program switch? I have not completed my undergraduate degree but am thinking of switching to another degree at the start of Fall 2018. I have talked to academic advisors, and they have said I would be placed in "fourth year" but would be there for two years to complete that degree. 

I was then wondering how schools like western and other medical schools that require you have at-least 3 courses in that enrolled year (if 3rd year at-least 3 courses per semester at level 3 or higher) would look at this switch? Also how would they calculate my GPA would it include this degree or just the one I am switching into?

Would it be better off to finish this degree and then start another one? 

Thank you for all your help, you have all been wonderful!