You should be able to file now with Form 8915-F for reporting a disaster distribution from 2020.
If you're using TurboTax Online, try closing the program, clear your Cache and Cookies and open TurboTax.
Type '1099-R' in the Search area, then click on 'Jump to 1099-r'. Continue past the summary, and you should be asked about 'disaster distributions' starting on the next page.
You will need your Form 8915-E from your 2020 return to enter the amounts requested.