Is doing exposure therapy 5 days per week good for anxiety?

May be: ok depending on the nature of the anxiety and degree of exposure. This is a highly individualized process and mist be conducted under the supervision of an experienced therapist

Exposure Therapy, : a specific type of Cognitive-Behavioral Therapy, is very useful for many patients with PTSD, OCD, specific phobias, panic disorder & other types of anxiety disorders. Optimal frequency is based on the type & severity of the disorder(s). Any type of therapy done to "retrain the brain" usually yields greater velocity of improvement when done with greater intensity & repetitiveness.