Hi littlebear.
Many children I work with have a diagnosis of autism but don't fit the classic stereotype (ie poor eye contact). This often leads to difficulty in it being diagnosed if people haven't specialized in the area. So it could be worth having a child psychologist or paed or another speech pathologist (if yours doesn't specialist in autism diagnostics) to conduct a formal autism assessment. Autism sa would prob be able to list professionals who could help. An organization in sa who may be able to offer some direction also is Isadd but I don't know if they could provide the assessment could always ring and ask them though.
I hope you can get some direction for helping your little one soon. He is still young and with the right early intervention will have lots of potential to reach his optimal development.