However, if you believe that you'll have a "high chance" of failing a certain course(s), you can apply for a discontinuation without failure.
Though, you'll need a very good reason which must be supported either through your course coordinator and/or Medical Reasons (i.e. Your doctor thinks that you're undergoing high levels of stress which may be detrimental to ur health). *lol it's not entirely impossible to achieve, but you'll need to make it sound real*