children and occupational therapy

Hi, 

my son is currently un-diagnosed. (autism is in the family and he is showing strong traits). 

Hes finally (through some pushing and encouragement) been assigned to occupational therapy, both in terms of an assessment and also, additional support. 

We're currently fighting for ISCAN to accept our admissions of assessment for autism. We will get there!

Just wondering what others' experiences of OT are and what to expect?? What can i do as a parent, of my son who has traits of dyspraxia and autism, do to help be a few steps ahead?

Many thanks,