Planning for 401k to Roth IRA conversion

I'm 66 years old, retired in 2022 and won't have income coming from W-2. I'm not claiming my SS benefits  (yet) and plan to start taking them at 70.

There will be a minimal income coming from investing (around 2,000).


I'm planning to make 401k -> Roth IRA conversion(s) before RMD starts.
With this plan, I will have 5 years when I will be in the lowest tax bracket. 


Will I be able to simulate this conversion using TurboTax ("What If analysis")?

If so, how and when?

Thank you