It's great to take time off supplements, even a multi, once in a while. Use food as a supplement and focus eating better and resting. Pretend food and sleep are your supplements.
Now as far as doing it so your body can make more of it's own??? I don't know, but your body can't make certain things on it's own, including most supplements. That's why you supplement with them, because you aren't eating them and your body can't make them.
Also, you shouldn't worry about dependancy with supplements