Yes.  The reason is that the IRS tax law follows 'allowed or allowable' which means 'use it or lose it'.  Essentially, whether you take the deduction or not you will recapture it. For this reason you need to use the depreciation in 2020 and 2021 and utilize the deduction.

• IRS Publication 946

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Disregard my previous post. (I removed it). I misinterpreted the question.

To help clarify why you are required to depreciate, even though you are renting it out for less than one year, take a look at IRS Publication 527 page 6, middle column. Under "Excepted Property" it states that you do not depreciate "Property placed in service and disposed of (or taken out of business use) in the same year." So your situation doesn't meet that requirement. You placed it in service in 2020, and will be selling the property (thus disposing of it) in the next tax year. So you're required to depreciate it.