Hi I ended up calling Service Ontario to confirm. They said that the letter for prearrival is not enough. Only until I get a letter saying that my son is eligible to PR. They told me to call them back if I get a letter like that so they can check if that's on their list of documents that will allow me to apply for his OHIP.Is there any truth to this? Because I would like to get my wife to apply for OHIP in that case.
They also said that once I do apply, there will still be a 3 month waiting period until the OHIP is in effect.
Hope this helps.