I work 40 hours and volunteer 8 hours per week. I'm self-teaching AS Chemistry on my one day off per week plus various hours after work. I'm starting to think I should be doing AS Biology as well as Chemistry if I want a wider choice of 5-year courses to apply to as a graduate. I am all too conscious of the fact that it is December already. That gives me only 6 months to learn four theory units and two practical units to the standard of an A grade, while working 48 hours per week. I am dedicated but I am wondering if this is asking too much? I only started the Chemistry a month ago so I will be doing two AS-levels in approximately six months. Any experience/opinions appreciated.