air force job change

im in the air national guard, and I ship out in a month. Im in public affairs. Im already taking a semester off of school, and i realized that ill be getting back from AIT a month after fall semester starts, so i now have to take a full year off. is it possible for me to change my job to something with a shorter tech school? i know my base has a handful of jobs open, but im not sure if its even worth asking.