Have Been On Methadone Since 2003 Approximately. Local Walgreen Or

Have been on methadone since 2003 approximately. Local walgreen or cvs have run out of it and don't know when they'll have any in stock. I'm taking 10mg Bid but there isn't any available. I wasn't ready for this and I don't know what to do now. Calling my doctor tomorrow but on fixed income so suboxone is too expensive. I'd love to just go off of it but don't know how. Thank God I don't work any longer. Looks as though I will be forced to if there isn't any. What are my options?