For tax purposes it stopped being a rental in August 2019. The expenses after that aren't personal, but they aren't rental expenses.
The $3,000 painting cost should be claimed as a fixing up expense or an expense of sale in 2020.
Here's what the IRS says:
Vacant while listed for sale.
If you sell property you held for rental purposes, you can deduct the ordinary and necessary expenses for managing, conserving, or maintaining the property until it is sold. If the property isn’t held out and available for rent while listed for sale, the expenses aren’t deductible rental expenses.
Publication 527, Residential Rental Property
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