Are there certain income levels that are used in deciding financial aid from a FAFSA?

Update: When I filled out my FAFSA for 19/20 I used my 17 tax return, which was higher than 16 and 18. I'm currently unemployed and in need of at least the same amount of aid I've received previously to be able to stay enrolled in courses. Would I be wasting my time with an appeal if my income from 2017 was a penny... show more When I filled out my FAFSA for 19/20 I used my 17 tax return, which was higher than 16 and 18. I'm currently unemployed and in need of at least the same amount of aid I've received previously to be able to stay enrolled in courses. Would I be wasting my time with an appeal if my income from 2017 was a penny over a certain number?
Update 2: I'm an independent student.
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