Baby 3 years old does not love to eat recently how to do

Baby 3 years old recently do not like to eat, may be a lack of zinc in the baby, or because of a single diet, leading to baby picky eaters. Suggestions: you take your baby to the hospital for trace element testing, if zinc deficiency is the reason, need to supplement zinc in time, diet should be rich as much as possible, meat and vegetable collocation.