Answer:
Systematic desentization therapy
Step-by-step explanation:
The treatment is called systematic desentization therapy.
A method of behavioral therapy built on the idea of classical conditioning is systematic desensitization.This treatment helps to suppress a phobia's fear response and eventually replace a calming response to the conditional stimulation with counter-conditioning.
In this case Freddie has phobia for knives and its there in his behavior. So, systematic desentization therapy, can help him to suppress the phobia of knives with counter conditioning.