How long do you fast? I’m not sure once a week would do much for you. (Sorry, now I see you do a full day, still not sure if that will help much so infrequently)
Are people forcing you to eat, or rather, your family making you feel obligated to eat?
You get benefits from fasting even if you only did it once a year. You would get more benefits if you did it more often, of course … and there is a fuzzy line somewhere, where it might be ‘too’ much, depending on the person. But it’s better to fast when it’s convenient than not fast at all.
This assumes you are getting sufficient nutrient density in the foods you do eat, of course.