<p>It’s so easy to change majors at UCSD, you can do it online. The only restrictions are that you can’t freely change to various biology or bioengineering majors (they are impacted now).</p>
<p>(I heard changing majors is much worse at Berkeley.)</p>
<p>Registration time is directly correlated to the number of units you’ve earned. As a freshman, it will be frustrating registering after most other people, but later you’ll usually get all the classes/times/professors you want. I don’t personally know anyone whose graduation has been delayed by this.</p>