A medical professional only has one pair of hands. They can only see the patients in front of them
With the growing numbers waiting perhaps some sessions of group therapy, as opposed to no therapy, could be thought about.
Getting to the reasons for the huge increase in youth mental health decline might establish some common features between many patients.
Or online lessons given to many parents at once, professional lessons, that might offer some support and advice which can be practiced at home.
How could anyone forsee the huge increase in numbers of psychiatrists required? It takes years, years, to train to a level to treat complex mental health disorders.
I know people will say "my child wouldn't talk in group therapy" perhaps not, but they might listen, or not feel so isolated knowing others are facing similar.
If medical help isn't available, long waits, then perhaps teaching families so options to try can be a plug gap. Even if it is just more promotion and support for online schooling.