Well you would have to edit each thing you entered but be careful not to change anything. Go though everything.
Like To check your W2 just type w2 (small W) in the search box at the top of your return and click on Jump To the W2
Or Federal on left
Wages & Income you should see your W2 listed at the top
Or scroll down to Wages and Salaries- Click the Start or Revisit button
You should get a box listing all your W2s.
Then click Edit by your W2 to double check it or change it