My advice ... continue to freelance. As every student knows, some weeks are just busier than others and leave you with zero free time. If you were running a business, how would you handle those busy weeks? Would you sacrifice studying or writing reports for your business?

The great thing about freelance is that you can do it whenever YOU choose! If you decide to take a few weeks off from freelancing to study for final exams, you can do it. Running a business will not necessarily give you that flexibility.

Best of luck!