Claiming Income from 3020 Cares Act Withdrawal

I withdrew money from my IRA under the cares act after getting Covid in 2020. I plan to pay the taxes over three years, and I paid the first third in 2020.  Schwab said they’re not giving me a new 1099 for 2021. How do pay taxes on the 2nd third?  I can’t find this answer anywhere.  Thank you so much in advance!