In this state, you have 7 days after your arrest to request a DMV administrative hearing to keep your license from being suspended. You are also required within 7 days after a DUI refusal and a hearing with DOT within 7 days after the DUI arrest. This means that you should contact a lawyer immediately to have a chance of reducing your penalties, especially since the request must be in writing.
Idaho allows you to plea bargain your DUI case down to a lesser charge, such as wet or dry reckless driving, both of which carry milder punishments than a third DUI. Talk to a lawyer about your plea options if you wish to do anything other than plead guilty to this felony.