If you took $6000 out of $18,000 as Section 179, the other $12,000 is depreciated as usual. So that $12,000 is spread out over several years (probably 7-8 years for a sewing machine).
If you used TurboTax in 2017 and transferred your information to 2018, then 2019, the program should already have that information for that "asset", and the depreciation should automatically be there. But you may want to double check that the "asset" is still there.
If it is not there (such as if you did not use TurboTax before this), then enter the information as an "asset" to be depreciation.
