For now, I'm putting down that I was a part-time resident in CA and NY. I don't want to pay the $50 to file my NY taxes if my refund is less than that.
If your income in NY is zero, you do not need to file.
If you are single and claiming yourself, you do not file unless your NY income exceeds $8,000.
If you are single and being claimed, you do not file unless your NY income exceeds $3,100.
Thank you! My driver's license and voting address is all in CA. I am only in NYC for school. Would I still be considered a part-time CA and part-time NY resident for 2019?
No, as a student you maintain your regular home in CA. NY would be non-resident, unless you create a permanent home there.