If you don't even feel like studying.... then why do you want to
go to a JC?
JC is much, much worse than poly in terms of sheer pressure and
workload. Not to mention the fact that you MUST go on to qualify
for university. Otherwise, you'll be wasting two years in a JC, and
you would have been better off just sticking to your original
decision to be in a poly.
So make a decision quickly and stick with it. If you want to be in
a JC, be prepared to work hard.