My question involves adoption law for the State of: Florida

I was raised by my grandparents right out of the hospital. I never was legally adopted,(just found that part out.) My grandfather "dad" is on my birth certificate as my father, I would like to remove my biological mother from and add my granny "Mom" to my certificate, who now is deceased? Where should I start if it's even possible?

When applying for financial aid for school, I was asked to show "Adoption Records" Or proof that my mother was deceased, for aid, Thinking I was adopted the whole time.. I figured my father would have them.. that was a no.. I was NEVER adopted, As big of a mess as this is I would like to start fixing it the way it should have been a long time ago, But dont know where 2 start or what to do without getting any1 in trouble? Removing my Father is not 1 of my options, He's made my life alot better than it would have been, If they wouldnt have taken me. Thanks