I did backdoor IRA (recharacterization then ROTH conversion) a week ago and won't get 1099-Rs or 5498 (TD Ameritrade won't give it to me till 2022), how do I file this?

Anybody have insights? Thanks in advance.

Yes, you will enter the recharacterization on your 2020 and 2021 tax return like this:

1. Login to your TurboTax Account 
2. Click on "Search" on the top right and type “IRA contributions”
3. Click on “Jump to IRA contributions"
4. Select “Roth IRA”
5. Answer “No” to “Is This a Repayment of a Retirement Distribution
6. Enter the Roth contribution amount 
7. Answer “Yes” to the recharacterized question on the “Did You Change Your Mind?” screen and enter the contribution amount (no earnings or losses)
8. TurboTax will ask for an explanation statement where it should be stated that the original $xxx.xx plus $xxx.xx earnings (or loss) were recharacterized.
9. On the screen "Choose Not to Deduct IRA Contributions" answer "Yes"  (If you have a retirement plan at work and are over the income limit it will be nondeductible and you only get a screen saying $0 is deductible)

Then on your 2021 tax return you will enter the conversion when you get the 1099-R in 2022 for the conversion (the 1099-R with code R in box 7  for the recharacterization you can ignore since you reported it on your 2020 tax return):

1. Login to your TurboTax Account 
2. Click on "Search" on the top right and type “1099-R”
3. Click on “Jump to 1099-R”
4. Click "Continue" and enter the information from your 1099-R
5. Answer questions until you get to “Tell us if you moved the money through a rollover or conversion” and choose “I converted some or all of it to a Roth IRA”
6. On the "Your 1099-R Entries" screen click "continue"
7. Answer "yes" to "Any nondeductible Contributions to your IRA?" since you had any nondeductible contributions for 2020
8. Answer the questions about the basis and value