Hi mam U should go for physical evaluation as only switch on and off light does not indicate autism If child is having eye contact, playing with others, normal in social places then it is not like autism But complete evaluation is needed to conclude diagnosis Decrease screening time to half hour, Play with child If hearing is normal and no tongue tie then some other history is also needed Weight is normal

Kindly visit your pediatrician as there are special charts to check for autism

Consult with Pediatrician physically for further evaluation and treatment

They can do it for fun also How are other social parameters, it depends on it? So can take a consult

Hii Requires detailed examination. More history required. Kindly consult