Pending the probable cause hearing under §33-6-422, no treatment shall be given that will make the defendant unable to consult with counsel or to prepare a defense in proceedings for involuntary care and treatment. No psychosurgery, convulsive treatments, or insulin treatment shall be undertaken for any psychiatric disorder until an order has been entered, after the §33-6-422 probable cause hearing in accordance with this part, requiring continued involuntary care and treatment of the defendant.