college credits

I currently am transferring 141 credit hours to a new career path. my credit transfer gpa is 2.9 In saying that, I’m attempting to increase my gpa to eventually apply for a competitive spot for a physician assistant student at a college. Most schools minimum gpa requirement is 3.0.

For my cumulative gpa to increase, I would literally have to take another 4 years of full time courses, and get all As in the classes.
Any advice on my next move besides getting another 4 year degree to improve my gpa in a degree that i’ll probably never use?
Thanks in advance