It's on you to prove that your childs TS will not cause excessive stress on Canada's health care so it depends on if the child has some other problems associated with TS. For example, if it turns out that your child is healthy and will not need any medical intervention, then you have a much greater chance than if it turns out that your child has other problems associated with TS requiring expensive surgeries in the future.
What did the doctor say you need to do? I find it most likely that you should see a specialist and get some extensive reports on what TS means in your childs case and then send that in and hope for the best.
