Change major at UCSD

<p>hi guys, i got accepted from UCSD by my alternative major, and i dont really like it much tho , so how can i change my major at UCSD, and how long it would take for me to change to my main major, 1 year?, my minor is math and my major is mech engineering. Can i declare my major and change it during the Orientation day and Transfer admit day?, thank you
PS: links related to the issue would be appreciated</p>

<p>[Current</a> Students: How to Declare or Change a Major (Undergraduates)](<a href=“http://www.ucsd.edu/portal/site/ucsd/menuitem.135225ab0c7ce3c0c0020010d34b01ca/?vgnextoid=2d59a78f2c741110a78f2c741110cdca5105RCRD]Current”>http://www.ucsd.edu/portal/site/ucsd/menuitem.135225ab0c7ce3c0c0020010d34b01ca/?vgnextoid=2d59a78f2c741110a78f2c741110cdca5105RCRD)</p>