I WAS TOLD BY DR, THAT I CANT COME OFF

i WAS TOLD BY DR, THAT I CANT COME OFF THE PRESCRIPITION GABAPENTIN WITHOUT BEING WITHDRAWN SLOWLY, OR COULD BE BAD FOR ME, I AM UP TO 3600 A DAY,AND AS OF 4 DAYS I HAVE TAKEN 1800 EXTRA A DAY,FOR NERVE PAIN,MY SCRIPT GOT MIXED UP AT PHARMACY AND NOW I AM ONLY TAKEN MAYBE,1200 A DAY, ITS WEEK END AND SEE THEY DIDNT GET THE HEADS UP THAT MY SCRIPT WAS INCREASED DURING OLD PRESCRIPTION WHICH WAS ONLY 1800,SO I AM RUNNING OUT SOON ,WHAT DO I NEED TO BE AWARE OF PLEASE! TY