Changing undergrad major after submitting application?

Hello,
I was considering changing my secondary major at ucsd from physics and cs to math and cs (my primary major is cse). Would this be a bad idea, applying for two capped majors? And if I wanted to do so, how would I change my intended majors? I did a quick search, but couldn’t find out how to.
Thanks!

If you apply for two capped majors, you risk getting into UCSD as undeclared. If you’re OK with that, then go ahead and put down two capped majors.

You should change it, but I am not sure how to change it now. Maybe call the school? If you get in as undeclared, you can change your major to any UNCAPPED major, through the myapplication site, once you are accepted. So, you can just change it to Physics again, if you wanted to.