Can you tell me is 3 mg klonopin (clonazepam) (benzodiazepine) a high dose?

At one time, yes. The average starting dose of Klonopin (clonazepam) is 0.5 mg two or three times a day, and in some people who are sensitive to the effects, as little as 0.25 mg as needed. However, a dose of 1 mg three times daily is quite common. It is generally not recommended to exceed 6 mg per day, so 3 mg a day is a moderate dose. If it is stopped, it must be gradually tapered or serious withdrawal may occur-seizures.