At Glasgow Uni I did an Access course, two subjects ( History of Art, and Classics ), and we had two 2 hour lectures a week. But we were expected to also plan for an extra 5 hours or so per subject week on week, with all the reading, and studying the art ( Classic texts ie Virgil, Eurypides, Homer, plus Greek and Roman society, men and women etc), investigation of the artworks, patronage, artists, sculptors, society etc for HoA, and of course all the prep and planning for the essays in each subject - 2 academic essays on each subject, per semester, so 8 essays in total. You can also spend a good bit of time in the Uni library. Probably 300 hours in total (you could easily do more) from end Sept to end following April. Then your "sit-down" exams in each subject in May, overall results posted in early June.