Do I need to be enrolled for spring semester prior to transfer?

Ok so I applied to the UC’s for fall 2021 and didn’t get into any schools that I wanted to go to. I plan to reapply to the UC’s for fall 2022 so I can finish major prep, igetc and raise my gpa. I will have everything finished (major prep and igetc) by the end of Fall semester 2021. There is basically no reason for me take any classes during spring semester. With that being said would I have to register for random classes for spring semester or should I be good with not enrolling in anything for spring. Just worried that this can bite me back and invalidate my tag or regular admissions.

I emailed uci admissions last week and they haven’t gotten back to me yet. I’m taking 4 classes fall semester with 3 being classes for IGETC and one being major prep. I guess if worst comes to worst I can split them and take like 2 classes in the fall and 2 in the spring but I really just wanted to finish everything asap.

I believe that only UC Davis states that TAG transfer applicants need to be enrolled for classes the Spring prior to matriculation. All the other UC’s do not require you take Spring classes but they may inquire about why you have no Spring classes.