This is something you need to speak to your priest about.
Often we consider fasting as the goal for certain times of year. Really, though, our goal for 'fasting' occasions is to grow more closely to the Lord and help work out our salvation. To learn how to love even more and to focus on God and learn how not to get caught up in the things of the world as much as we often are.
If in effect you already are fasting, there are other exercises that your priest can prescribe for you to help you to grow and to love others as well as God even more. But, the priest needs to know you and know what you are working with, in your physical, spiritual and emotional health.