Technically, you are a non-resident for the year 2019 and required to file a Form 1040-NR. On Form 1040-NR, you only need to report US-sourced income. Therefore, you do not need to report that income you made before moving to the US.
However, you have another option.
If you anticipate you will be staying in the US for at least 183 days in the year 2020 or meet the Substantial Presence Test SPT, you can make an election to treat yourself as a resident from October to December 2019, to file as a dual-alien alien. Please see FirstYearChoice- Residency Starting Date under the First-Year Choice.
If you meet the requirements, for the year 2019, you will be filing as a non-resident for the first ten months and a resident for the rest of the year. To read more about the pros and cons on dual status, click here: Dual status
If you decide to file as a non-resident for the whole year, as TurboTax does not support any nonresident tax forms, you are advised to contact Sprintax to file your 2019 taxes.
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