Is there a particular reason that you need to be a "game programming course?" It seems like with your schedule, something like a good YouTube playlist or another place with very on-demand teaching would be idea. I don't have any particular ones to recommend but maybe those extra options will help someone else point you to a good resource.
Oh, well, I've been studying on my own for a while, reading books and articles, watching YouTube playlists, etc. I think taking a course would make me commit more and be more responsible about it, maybe motivate me a bit more, if you know what I mean.