As Critter-3 said, annuities often contain deferred income. If you received distributions from these annuities in 2022 you would have received a 2022 Form 1099-R for each of these distributions showing the taxable amount as Income in Respect of a Decedent and the failure to report these on your 2022 tax return is likely the reason that the IRS is assessing taxes and interest. You'll need to review the assessment to see if it's in agreement with the amount of taxable income shown on the Forms 1099-R and, if so, pay the tax bill.
If there are any penalties for underreporting the income, you might be able to request a waiver of penalties, but the interest generally cannot be waived. You might be able to arrange a payment plan with the IRS. As Critter-3 said, a local professional might be able to help with this, but that would likely result in a bit of additional expense.
