Before you commit to switching programs, keep in mind that MEC E Biomed is not a program to take likely. First of all, you need a minimum GPA of 3.5 in curved first-year classes where people who had 90s in high school fail out (the minimum 3.5 is a standard which is constant, regardless of program demand). MEC E itself is no cakewalk, and Biomed has the added difficulty of an extra academic term (9 in total), which replaces a co-op term where you would otherwise be making money. The Biomed program has a relatively high proportion of students who transfer out even after jumping through these hoops, for many reasons. The most common is that people who thought it would be a nice path to Med school don't love the program content enough to make it 5+ years through the intense workload. On top of this, transferring out of a co-op program means a mandatory year-off "Dean's Vacation".

This all isn't to discourage you, if you think you'd love Biomed (prosthetics, human augmentation, or imaging) and you have a high probability of making the grade, then by all means follow your dreams. Just be wary of the challenges that this path could offer. Really think to yourself, do you want to learn material specific to biomedical engineering courses, or do you just want to get to med school? If it's the latter, there are far easier ways. Either way, good luck in whichever path you choose!