Well, you have two options, stick it out or go back to CCC, but since you already completed 2 years in UCSB, there might be credit limitations. (You should call a CCC counselor) You have to ask yourself why are you in college, are you considering majoring in something that is not available at a UCSB? Is there any specific, valid reason that would warrant you to consider leaving? It’s up to you to decide, so good luck.
Ya, it’s too late to transfer, maybe again next year, but you might need to take a year off to prevent taking too many credits.