Is Clonazepam Advisable For Panic Disorder?

Hi...My name is Brian J. Kuz..My question is i have in the past (2009-2011) ....been taking 6mg (2mg morn) (2mg noon) (2mg before bedtime) of clonazepam. My new doctor doesn t believe that this medication schedule is not helping me after many years of being w/the former Phyciatrist. He decreased my dose to .5mg @ bedtime & i m been suffering for years, Is clonazepam the best medication for me?