Ammend from 1040EZ to Schedule F farm tax

So I have been starting a Farm while having my full time job, was planning on getting it up on its feet prior to doing the farm tax thing due to the low income of startup. I have already filed my taxes for 2017 (1040EZ) which was a total disappointment due to the amount of taxes withheld and kept by the government. So with a little research I learned I could have filed as a farm (schedule F) in 2017 and would have been way ahead. Now I want to do an amendment to my 2017 taxes through Turbo Tax and cannot find a way through the choices given to do so. What do I need to do? Any help would be appreciated.

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