Sometimes I have insight into my hypomanias, but I never have insight into my full blown manias, until they are downgraded/over. Perhaps if there is any exception, it's when I am having a severe mixed episode, but not always even then.

Before accepting my diagnosis, I didn't have insight into hypomanias, either. Even after my diagnosis, it took a while before I gained it. Even now, sometimes I don't realize my hypomanias until either someone tells me or I do something that does make the lightbulb go on.