Yes, it is possible to switch between different programs at any time. You can switch between the standard (4h/week) and intensive (10h/week) programs whenever you want. You can also change the time slots (weekday/weekend) you are studying at as well as your time zone preferences. It is also possible to change to a higher or lower level course if you feel your current course is not enough / too challenging without problems. Just let us know 72 hours in advance and you can switch into another group at any time.