Sorry to say but you cannot transfer into Aeronautical Engineering. That being said, you will have to transfer into FYE and then go into AE. It will be difficult and you will have to be lucky, but you should be able to do it. Just take
2.Chemisty/Physics with a Calculus base, and
3.At least two of the following - Chemistry II, CS programming (C language), Biology I, English composition, a communications class or other humanities course.
All with the best grades you can muster.
I also recommend taking a look at the Plan of Study https://engineering.purdue.edu/AAE/A.../Undergrad/pos
and take the electives now so you minimize the amount of time you have to stay in past 4 years.
You are also going to have to be lucky, because CODOing into Engineering is difficult and they don't accept that many.