How do I know if I will get additional deductions if my AGI may be lower now do to the $10,200 of unemployment being tax-free? Should I amend my returns?

I filed in Feb., my wages plus unemployment income was totaled $26,000 for 2020. Now subtracting the $10,200 that would make my income $15,800. Would this qualify me for additional deductions, or did I already qualify for everything before the American Rescue Plan? Should I amend or just wait for the IRS?