The SECURE act in 2019 changed the rules on inherited IRAs (if you are not the spouse). See, for example, AARP's blurb. Before there was a set of rules to calculate Required Minimum Distributions based on an 'age' that combined your age and that of the original owner. The new rules are that you have to empty the IRA within 10 years, with some clarifications last year that you needed to be pulling money out each year rather than waiting 10 years and taking it out in one go.
One look at these new rules (which do not apply to your situation but were asked about in comments) can be found at a University of Illinois site. Apparently, IRS publication 590-B, "Distributions from Individual Retirement Arrangements (IRAs)" for 2020 and 2021 had no details on required withdrawls, but only stated that the amount be withdrawn within 10 years. As of August 2022, the IRS has changed the rules for 2023 and forward. Quoting from the link:
Beneficiaries of IRAs inherited in 2020, 2021, or 2022 should plan on receiving distributions from that IRA or qualified plan in 2023. That distribution should be at least as large as the RMD that would be indicated given their life expectancy and the age they attain on their 2023 birthday.
Put differently, they want you to be taxed each year at least as much under the new rules as you would have been under the old rules, and pull it all out within 10 years on top of that.
The good news is, for you, since you inherited pre-2019 the old rules apply. The SECURE act was not retroactive so you can ignore those clarifications and continue to use the adjusted age for your required minimum distributions.