Yes, you can amend your return to use itemized deductions instead of the standard deduction. But, I cannot envisage how you benefit from doing so when your itemized deductions are less than your standard deduction, unless there is some advantage on your state tax return. So, make sure you benefit once the amended return is prepared.
Click here for instructions on how to amend if you used TurboTax to file your 2018 return
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