"How should I take my RMDs if I have multiple accounts? If you have more than one IRA, you must calculate the RMD for each IRA separately each year. However, you may aggregate your RMD amounts for all your IRAs and withdraw the total from one IRA or a portion from each of your IRAs".
Reference: https://www.irs.gov/retirement-plans/rmd-comparison-chart-iras-vs-defined-contribution-plans#:~:text....
