You can try: https://www.kinandkids.com/

I brought my eldest there when he was 3 because he had some issues with easily being triggered and crying for an hour+. About 6 months then ok already, but parents also must be involved in the process la.

Its not cheap, but not that expensive also. I think its a good place to get started before deciding if you need further help. At least don't have to wait months to years for appointments.