Retirement tax questions

As I am paid severance, in 2022, I will get a W-2 in 2023 for 2022 tax year.  That will confirm my employer’s reporting of my coverage status.  W-2 just received now, would show I am covered as the period is 2021.  But I can wait to 4/15/2023 to make my IRA contribution for 2022, once I have such written confirmation.