Study.com - Can you change plans monthly?

[StudiousTraveller]

I'm looking to take some Study.com classes but I plan to take about a month to do each one because I am not in a hurry. Is it possible to change my plan each month to save a little money? For example, can I do the $59.99 plan month one to work on course A and then switch to the $199.99 plan for month two to take the exam for course A and then work on course B and take the exam for course B? This would allow me to write two exams every other month making each course cost about $130 instead of doing one exam per month which would cost $199 per course. Then I would either take a break for a month or two or start the two-month cycle again (depending on what else I have going on).