Select with Dynamic data

I’m using the free version and it’s awesome.

I’ve set a new field in the checkout as select, with 3 options (from the plugin).

Now I’m wondering if it would be possibile to set the options in a more dynamic way. Meaning:

if today is the date/day XXX, show me the 3 options
BUT
if today is the date/day YYY, show me ONLY 2 options