Just to clarify, you submitted your FAFSA, am I correct?
If so, you should expect to receive your Student Aid Report in several weeks, which will provide you with an estimate for how much the federal government thinks that you are capable of paying for school. Shortly after, you will receive a financial aid letter from your college, indicating exactly how much financial aid you qualify for.
However, going back to the initial statement about minimum GPAs, most colleges do actually require a minimum GPA as part of their Satisfactory Academic Progress (most schools require a minimum GPA of 2.0). Dropping these courses could have a negative impact on your GPA, so try talking to your guidance counselor to see what your current GPA is, and whether this GPA will qualify you for financial aid.