Intermittent Freelance work tax coming out of regular full time job taxes

I work intermittently as a freelancer making at max $25k per year. I have another full-time job that takes out taxes as normal as well. In order to make sure I had enough to cover taxes from the possible freelance profits through the year, I had my full-time job start taking out an extra $200 for taxes out of each of my paychecks. 

Will this work to cover my freelance taxes? Or do I need to set up a different quarterly payment system?