Can you describe your husbandry and set up?
90% of the time when a baby goes off feed, it's due to husbandry or environmental factors.
Is he in a high traffic area? How big is he? (weight in grams)
Don't offer food so often. Keep to the once a week schedule for now. Offering food too often can actually be counterproductive in trying to get him to eat.
Do not handle or bother him for the entire week either.