I Am Recovering From An Injury And Have Been Prescribed

I am recovering from an injury and have been prescribed amitriptyline and methocarbamol... stopped taking Norco. I have been using simular pain and sleep aids for about one year....I will be taking a position that requires strict guidelines...
How long will it take to clear my system and how long will it take to tapper off the meds...
I am slowly decreasing the amount used, to keep the side affects down
I am also in contact with my physician...wanted a second opinion

thank you