If I dont get my 1st choice for engineering in ETAM, I can transfer out of TAMU right ? (oos student here)

So I have committed to TAMU. I really wanna do aerospace engineering but I know ETAM is competitive and things may not go how I want them to, so I was wondering if it is possible for me to transfer out of TAMU if I don't get aerospace engineering through ETAM. Out of state student btw

And the reason I picked TAMU is because its a good school (primary) but also because its my current best uni option.

Also if I do transfer Ill mostly transfer to another uni for aerospace engineering. Will the coursework and credits and whatnot from first year be transferrable ?