Live in Florida remote work to Michigan company

Hi, I have lived in Florida and worked for a company in Michigan for three years.  This year my company gave me a paper to fill out to not have Michigan state taxes taken out.  I have paid MI state taxes for the last three years and have been only getting $200 to $300 dollars back when I file each year.  Should I be getting the full amount paid in back each year?  If so, should I do an amended tax filing for the 2021,2022,2023 tax years?  It would be a significant amount of money, so I think worth it if I can.  

 

Thanks for any help, I have been reading post all morning to try and figure this out.

 

Lisa