URGENT: If I apply early action, can I add to my application if I get deferred?

Applying to College
1

<p>HI ALL!!!</p>

<p>If I apply early action, can I add to my application if I get deferred?? I am applying to Caltech early, but if I get deferred, can I change stuff in my application to make it better, and stuff???</p>

2

<p>PLEASE ANSWER THIS!!! It is very important, and I am very nervous. I already had 2 seizures.</p>

3

<p>Yes you may add supplements if deferred</p>

4

<p>^^^^^ But can I change my existing supplement?
Thanks</p>