Deferred From Wisconsin

I got deferred from Wisconsin with a 1390 SAT, 3.7 unweighted GPA, and plenty of extracurriculars. I know that I need to keep my midyear grades up, but I also heard that sending a letter to your admissions counselor helps. Is there anywhere on the student portal where it says your specific admissions counselor or should I just send an email to onwisconsin@admissions.wisc.edu? Thanks!