Do we need more time or is it goodbyes from here?

well, from what i can tell, the main problem is that you two don't get enough "face" time, since you have no classes together. if you want to rekindle whatever you had before, join a club/extracuricular activity with her, spend some time with her then, and if it works out, good for you. if not, it wasn't meant to be. good luck