Our DS needed therapy for amblyopia when he was 6.

His therapist's office had a binder with letters from past therapy successes that included many kids' handwritten praise for the exercises and encouragement for others who are going through (or thinking of trying) therapy. Perhaps your son's therapist has something similar or else could connect you with a support group?

Has your therapist access to Visiontherapysolutions.net ? Our son did exercises online and he said they were challenging, but like a video game, so they were a welcome addition to the other more boring ones.

Hang in there! The initial pain goes away and it's exciting to see how much of a difference can be made.