In most university programs students have the option of dropping or deferring subjects if they are unable to sustain the workload. The Option of deferring your degree for 12 months could also be a viable option (time frame varies from uni to uni). This can be necessary for any number of reasons, and can be worked around if addressed early.

It is important that you speak to a student counsellor at your University, and discuss your options. University is time consuming & expensive, studying a subject that is of no interest to you is a waste of time & money in my opinion. Time for you to re-evaluate and find a program that is workable....Your Student Counsellors are there to help you navigate these type of difficulties.

I hope you find a way through...all the best of luck to you.