NG to AD but different MOS

Hey everyone! I (22F) have been in the Georgia Army NG for 5 years as a 42A (Human Resources) and I want to switch to AD, but as a 46S (Public Affairs). Has anyone done this before? Would I have to go to AIT first then switch or switch then go to AIT? If the latter, would I be considered MOS-T or like someone who just got from BCT? I am deployed right now for about 3 more months. I don’t have access to an AD recruiter at the time, but I am looking for one in my state. Thanks for your help