Inherited IRA

I received an inherited IRA of approximately 3M. I was already retired with around 9M in after tax investments as well as an 800k home with a 400k mortgage at 2.5%. My annual expenses are around 120,000k. Any thoughts on withdrawal strategies for this IRA? My understanding is that it needs to be emptied within 10 years. My first thought is to take out whatever gets me to the top of the 24% tax bracket for 9 years and then just take the balance at the end and likely paying a fair amount in taxes. First world problems I know. I would have preferred that my mom spent it, but sadly she didn't get to.