To ask the question again, what do you think is incorrect with the aid package?
I went through the appeal process once with the financial aid office once and it was serious work. All in all, I submitted about 30 supporting documents including tax returns, separation letters, signed statements from my parents, pay stubs going back at least a year, etc…
This was all for a significant “change of income” in my case, and probably the only situation in which you’ll have a fighting chance.
So, really depends on how bad you really do need the money or if you can just ask your parents or other family for help.
See “Change of Income”:
https://financialaid.calpoly.edu/_finaid/forms/1718.html