Conditional fomatting with date and time in excel

Hi all,

I have a problem on conditional formatting with date and time.

I hava a cell A1 that has date and time and I want to conditionally format its adjecent cell if the value of cell A1 is greater than 3 days compared to today, then cell A2 should show as "Follow-up Required" and cell colour should turn red no. if cell value of A1 is less than 3 days compared to today, no action is required.

Please help.

Regards,
Kiran