I think he means the 1,300 was the tax due on the original return.
@Slg004l amended returns normally take 16 weeks (4 months) or more to process. But these are not normal times. It might take 6 months or more.
What was wrong? Why did you need to amend?
You can track an amended refund here, https://www.irs.gov/filing/individuals/amended-returns-form-1040-x-/wheres-my-amended-return-1
