Have you checked for other connections or other dates that would work better for you? Since they changed you off a non stop flight, then if you can find another routing that you prefer, you can cancel altogether and get all your money back. Considering your date of travel, I would assume that everything is all full for that date though. Since you can cancel without any penalty, if you find another routing that works better for you, you could call them up and probably they will change you to it. They would rather do that than give you your money back.