I don’t know the answer to #3. #1 yes you are able to input without a 1099-R. This link below has some steps in the answer on how to manually add 1099-R. It’s from last year so adjust years. #2, it will ask you which calendar year the 1099-R is after you input it. The codes were confusing but it’s either P or 8 and you will see if it changes your refund/amount due which would mean it increased your taxable income.
<a rel="nofollow" target="_blank" href="
https://ttlc.intuit.com/questions/4422968-excess-401k-contribution-withdrawn-w2-correction-need-taxr...>
