Retirement tax questions

Thank you!  Now for the 401K RMD do I use the tables in IRS 590b?  And for the worksheet do I use my age or his age in Appendix A-1 or use A-2 since I won't be 72 until 2025?  And I stay on that schedule instead of switching to my own when I turn 73?  

Or maybe the 401K will tell me how much to take.  At the time they did tell me that 2023 was not required but 2024 will be.  But they did send me the 2023 RMD, maybe they needed to or because I asked them to just to be sure.