My almost 2 years 3 months old son is able to sing 4 rhymes with a little clarity; he is able to say A to Z English alphabets partially clearly; he is able to say 1 to 10 numbers almost clearly. Furthermore, he is able to say Papa, Grandfather, goodbye, complete,egg,apple etc. by himself & can say some more words if we tell him.Other than these, he speaks meaningless words which we don't understand. He responds to his name according to his wish & doesn't respond every time. He makes good eye contact. So is his speech development normal or has he got serious speech delay? Kindly respond Sir/ Madam