You can file a Form 843 (Claim for Refund), together with a Form 8288-B, to show the estimated tax on the sale. This is the IRS's official process for obtaining an early refund of FIRPTA withholding.
TurboTax does not support Form 843 or Form 8288-B
IRS Form 843, Claim for Refund and Request for Abatement - https://www.irs.gov/pub/irs-pdf/f843.pdf
IRS Form 843 instructions - https://www.irs.gov/pub/irs-pdf/i843.pdf
IRS Form 8288-B, Application for Withholding Certificate for Dispositions by Foreign Persons of U.S. Real Property Interests - https://www.irs.gov/pub/irs-pdf/f8288b.pdf
