How could he listen to the advice of another when, indeed, he could not make up his mind to make peace with the Pandavas following your advice.
यन्न तस्य मनो ह्यासीत् त्वयोक्तस्य हितं वचः। प्रशमे पाण्डवैः सार्ध सोऽन्यस्य शृणुयात् कथम्॥३४