You are at serious risk, stopping that much
clonazepam 'cold turkey'. There are three substances that have potentially fatal withdrawal; alcohol, benzos (clonazepam, xanax, valium, etc) and barbiturates. The main problems come from seizures, that can come without warning while you are driving down the highway, or from 'DT's', where the person becomes delirious and confused to the point of not caring for himself.
The proper treatment would be to taper you down over several weeks. I suggest going to an ER or detox or psych facility and explaining the situation. It can be done outside the hospital, often using an anticonvulsant to avoid a return to high dosing by the patient.
Another way to do it that I have used is to give the patient a prescription for clonazepam for only two days, with 5 refills... or a series of prescriptions with 'fill after' dates, each with a lower dose. Your doc took the easy, and dangerous, way out-- and in my opinion is responsible for anything bad that happens related to your withdrawal. But don't let that keep you from getting yourself taken care of.