As far as i know, all victorias allocate roughly the same class time for each language used in the stream. I.e. either 2 languages (P T H n Eng) for the bilingual stream or 3 languages (Canto, Eng and P T H) for the 两文三語stream
Daughter wen t into C W B trilingual P N 2 years ago with zero prior exposure ti P T H.
By end of school.year she can recite a lot of nursery ryhmes in Perfect accent and can respond to simple questions asked to her by my P T H native speaking ex colleagues. Understood stories told in PTH.
點謮around 10 chinese characters in both Cantonese n P TH