the problem may be that you rolled your father's IRA into your own IRA. They have different RMD requirements and should be kept in different accounts.
I wonder if TT assumes that is not going to occur.
https://www.irs.gov/retirement-plans/plan-participant-employee/retirement-topics-beneficiary
Suggest talking with the administrator of the IRA - that is where the problem begins
from the link: If the inherited traditional IRA is from anyone other than a deceased spouse, the beneficiary cannot treat it as his or her own. This means that the beneficiary cannot make any contributions to the IRA or roll over any amounts into or out of the inherited IRA.Jan 8, 2020
