Poor and fussy eating is a parent made catastrophe for children even in weĺl to do families with abundant to eat. Stop his day time milk inake altogether. Make meal time a pleasurable family affair. Dont feed him only cerelac or milk yielding to his tantrums. Such children often develop poor taste due to zinc deficiency and other multivitamin defeciencies. No colas , chips , junk food , maggi, choclates , cakes etc. No caffiene containing beverages.

Give him colorful food. Give him the same food that  the entire family eats, and also make him eat along with u. Don't run around him for feeds U can also deworm him. Worm infestation can also lead to reduced appetite. Even if this doesn't help, u may have to get his hemoglobin levels checked,  as low iron levels can also lead to low appetite