hello Dr. my son is 16 months old he speaks everything he is very active very very. he knows everything he also knows about relationships that eg- chacha Chachi Nana Nani dada Dadi mama Mami Didi even he understands and speak. know how to clap how to fold legs and hands mind is very very sharp. copies everything. but not eating that much of foods very few few things he eat. what to do ? any diet plan calcium protein did u suggest me.? what weight should b okay for my son?