State of Residence for PHD Student on Stipend working Remotely

I was employed in Maryland thru the first half of 2020.   I left my job and I began a PHD program with a university in California in September 2020, but I remained in Maryland and completed the first quarter of my PHD program 'remotely' while living in Maryland.  I received a stipend from the California school, again, while living in Maryland.  I performed the 'work' while living in Maryland.  I moved to California early in Jan 2021 to continue the PHD program in person.  My move to California may or may not be temporary (it is too early to tell).  For 2020, do I need to complete a California Part Year tax return?