You did not take the RMD twice. You took the RMD once and also took a distribution in excess of the RMD which could be returned to the IRA as a rollover IF returned within 60 days of the distribution. So if you took it in December then you might still be within the 60 day window.
Unfortunately, if over 60 days then it will just be a taxable distribution that cannot be returned.
**Disclaimer: This post is for discussion purposes only and is NOT tax advice. The author takes no responsibility for the accuracy of any information in this post.**
