my son age 3 years old 3 months 13.7 kg.. he having two idly with carrot sambar morning at 9 clock after that coconut water at 10.30, vegetable one bowl at 11.45, 1 clock curd rice... he sleep at 2 clock after he wake 3.45 and have one apple... then 6.30 one banana... 8 clock 2 idly or two dhosai.. daily routine... why not gaining weight... pls suggest