2 years old and confirmed? i also suspect mine when he was 18 months to 24 months but KK doctor says put him to childcare first when i bring him in at 17 months. If the teacher feedback , means quite firm, otherwise, is just that they do not know how to response and react. So after placing him in a childcare for 9 months. KK doc clear him as normal at his 2 yrs old. and he can communicate and react well now. but not to be super exact responsive. still monitoring. but is really a good method by placing in chldcare.
so at 18 months:
90% do not response to his name
90% no eye contacts, love to stare at his own toys
very rountine , does not like to disrupt his toys arrangement
doesn't talk much. single word
doesn't look at where you are pointing
right now, though doc clear him, he still doesnt look up to where you are pointing 80% and still love rountine and hate to be disturb.
however, he love talking, singing, yakking non stop till he sleep.
suggest you put your kid to childcare first.
it might be like my case.