If someone is exempt from fasting on a minor fast day, with the example that I have in mind being a nursing woman, is there any concept that they should still fast as much as possible, or do we say that once the fast is broken it is broken?
Does it make a difference if they have not broken their fast yet? I.e. if someone woke up and has not yet eaten, is there any reason for them to push off breakfast so that they have gone longer without breaking their fast?