The answers to TurboTax's question as to whether you completed all of your RMD don't properly accommodate taking the first RMD early the following year and tend to imply a waiver is required when it really isn't. It appears that the Form 5329 and explanation that you filed is actually inaccurate, so it probably makes sense to correct it.
The IRS can only determine the date of a distribution by performing an audit where they require you to provide copies of account statements or transaction statements that your IRA or plan trustee has provided to you. Requesting a waiver and the IRS not denying the waiver heads off the IRS later assessing an excess accumulation penalty (although the IRS doing so seems unlikely given their general lack of RMD enforcement to date).
