Provide the theme summaries for the following conversation: 

Maola: Nethan still doesn't speak 
Ontina: How old is he you said?
Maola: 12 and half months 
Maola:  It worries me
Ontina: But he speaks some simple words, right?
Maola: Yes. For example...like "mama" or "daddy"or"hungry"
Ontina: Then do not worry too much
Ontina: Most of my friends said their kids started to talk around 16 months 
Ontina: And suddenly talk so much 18 to 19 months and reach at pean between 22 and 24 months
Ontina: peak*
Maola: Isn't there good way to make this period earlier?
Ontina: There were 2 ways that actually helped my son speaking faster
Maola: What were they?
Ontina: Try to answer him back with longer sentence
Ontina: For example, when he says "mama"
Ontina: Then "mama, thank you" like this
Ontina: Or sing his favourite song together
Maola: How about reading the book together?
Ontina: That was the 2nd method I used.
Ontina: Try it. 
Ontina: And don't worry!

Summary: 
Maola worries that her son does not speak at the age of over 12 months. According to Ontina, she shouldn't worry, and she can try different language development methods.