You will need to continue to meet the basic eligibility criteria, make satisfactory academic progress, and fill out the FAFSA form every year.
do I only have to do this when I send in my forms?
The basic eligibility criteria that allow you to get federal student aid continue to apply throughout the time you are receiving aid, not just when you first fill out the FAFSA form.
so I need to fill a form each year?
Are you asking about the FAFSA form?
yes
Each FAFSA form you fill out is for aid for a specific year. In order to receive aid for that year, you will need to submit that year’s FAFSA form.
what is considered satisfactory academic progress?
You need to make good enough grades, and complete enough credit hours, to keep progressing toward successfully completing your degree or certificate.
Do you know about your school's satisfactory academic progress policy for financial aid purposes?