Checking stool would be one way to rule out one more thing, but probably
will be neg.  Pot bellies are typical shape of toddlers.  Another problem
with toddlers is that they don't eat...much.  They live on air.   The
recommended portions are like 1-2 Tablespoons of this or that and a quarter
of a sandwich is a normal portion.  Is she drinking a large volume of fruit
juice?  It can destroy the appetite and doesn't provide much in the way of
real nutrition.  Sincerely, Pat in SNJ