Maybe it is too warm in winter where you are?
Up here I had it in flower on very dull November days (well, it flowered at night so that is extra dull of course) when temperatures were probably not far from freezing. I guess there is a reason why it flowers in November and not in September or October, when night temperatures are still higher and daytime temperatures certainly are when the sun is still shining and lifting the temperature in the greenhouse up a lot.
I don't have trouble with this one, unlike some other mesembs like Diplosoma. I guess C. pageae likes it cool and does not mind dull gloomy winter days.