If you read the long informational sheet they put in your accutane box, you'll see that it says the accutane shrinks the oil-producing glands "temporarily." I was surprised about this, since I was hoping it would be permanent because so many people don't need a second course. Anyway, there is a good chance the oily skin may come back.

Also, the information (and other stuff I've read) says that if the dose is too small during one course, you may need another course because, often, the acne comes back. Don't know if it said anything about cutting off treatment so soon. Sorry that you had to do that. Hope your clear skin sticks around.