How to renew my i-20?

First, you need to contact the international affairs office of the new college, and you need to submit a form to them, requesting a new i-20. You better do it asap, if you are planning to leave during the break, the peak season is coming. And don't leave before you got your new I-20.

Hope that it helps!

You better ask the international student center at your current college for more details. They can give you some guidance.