I think I just entered all of my info twice, so TurboTax thinks I get paid twice the amount of salary I actually receive...

I was wondering why I had to enter my entire W2 information twice and thought that was odd, but just kept going. After I entered my information from my W2 once, it said so far I would RECEIVE a federal tax payment of $446 or something like that. Then I was prompted to enter the same exact information in a 2nd time (which was when I thought it was odd, but just kept going) and now it is estimating that I will OWE $4,195 in Federal taxes, which I know is incorrect. What should I do to move backwards and correct this? Thank you!