Deferred...help?

<p>i was deferred ED, and basically everywhere i’ve looked it says to update your application and whatnot. i looked on the brown website to see if there was a deadline for this…and i didn’t see anything. i called admissions and i wasn’t told a date, they were probably flooded with phone calls considering it was the day after the decision letters were mailed. if i want to update my application…how do i go about this? and should i do it before jan 1 (RD deadline) or can i still do it in say…early feb? considering the RD deadline is in like 3 days i’m kinda worried haha.
also…a supplemental essay…is it even worth it or will they not even consider it?</p>