Hey @Scott_Gardner1!
How about this?
IF(
{DESIGN DUE DATE},
IF(
DATETIME_DIFF(
{DESIGN DUE DATE},
TODAY(),
'days'
) = 1,
DATETIME_DIFF(
{DESIGN DUE DATE},
TODAY(),
'days'
) & " Day",
IF(
DATETIME_DIFF(
{DESIGN DUE DATE},
TODAY(),
'days'
) = 0,
"Today",
IF(
DATETIME_DIFF(
{DESIGN DUE DATE},
TODAY(),
'days'
) > 1,
DATETIME_DIFF(
{DESIGN DUE DATE},
TODAY(),
'days'
) & " Days"
)
)
)
)