UC to UC Transfer

I’m currently a first year at UCI and I’ve honestly never liked the school. I originally got into UCSD with my alt major (Data Science) instead of my main one (Computer Engineering). I didn’t want to deal with the major change process so I originally decided against UCSD, even though it was my dream school for a long time. Now, I’m thinking of applying to UCSD again next year.

I want to hear some stories about people transferring from another UC to UCSD. I know it’s much harder than if I was at a cc, but I’m curious how it’s like for those that stuck through the process and succeeded. If not, I also want to know what made you changed your mind later on.