Retirement tax questions

still my w2 box 12 shows more than allowable limit and i get automatically tax on it i guess based on software.

 

should I deduct the excess amount hat i am going to report on 1099-MISc from box 12?   if so I heard I get audited if the change numbers different from original w2?  is it true?  can i just deduct amount from w2 box 12  and add that to 1099-misc?