Retirement tax questions

Now a year plus later, can anyone with knowledge chime in on where the IRS has ended up on the issue of RMDs for non-spouse inherited IRA as pertaining to the 2023 tax year and beyond?

 

Specifically, for those like the OP and myself who have non-spouse inherited IRAs under the newer 10-year required draw-down period?

 

My deceased father was old enough to have begun taking RMDs on his IRA up until his death in 2020, where he took his final RMD. But for the 21 and 22 tax years,  I didn't do any formal RMDs for that account that I inherited because of the IRA's pending guidance.

 

But I did for the past two years start doing my own informal 10-year plan of distributions/withdrawals each year in order to avoid the balloon tax debt problem at the end of my 10 year drawdown period.

 

TurboTax is asking me this year how much of my 2023 distribution was an RMD -- all, none or part. I'm sure I withdrew more in 2023 than whatever formula RMD applies. But I don't know how to calculate what my actual RMD would be, and whether it's based on MY age when I inherited the IRA, or what my father's age is/was???