Do you really need to tie the money up into an annuity?
It wasn't financially optimal, and lots of people here would not have made the same choice, but when we had a large windfall from a property sale in 2017 shortly after FIREing we elected to just live off the liquid cash while allowing retirement savings and other investments to continue to ride the market. It was a pretty cushy cushion, but it had minimal earnings because we didn't want to risk it to the market -- so that allowed us to have a very low taxable income and keep our tax/health care costs to a minimum.
That money has now mostly been spent down, and I am in the final stages of an amicable divorce. I bought my own house a few months ago and am renovating it. I should have JUST enough in my non-retirement funds to pay for this first stage of renovations + my living expenses for the next 4 years up to age 59.5. If necessary I will get a PT job to help cover living expenses, but market willing I shouldn't have to do that unless I really want to. I do have Roth contributions I could tap if necessary, though trying to avoid that. Could also do a 72t SEPP withdrawal, but that also seems to be more hassle than it is worth.
Within my retirement accounts one thing I have been doing lately to reduce my anxiety about potential losses has been to move my Roth contributions into MM funds. Mentally those buckets are my emergency fund for the next 4 years. Once I hit 59.5 I will probably adopt a strategy of having 2-5 years of living expenses in cash- or cash-like buckets within the retirement funds. Then let the rest ride the market (though I will probably keep the 5-10 year projected needs in more conservative funds like a target retirement fund). This may reduce my returns overall, but hopefully the reduced anxiety about where my immediate living expenses are going to come from will be worth it.
Anyway, you do you, but annuities tend to have high fees and with interest rates on CDs and MM accounts (and 10 year treasuries) being in the 4-5% range currently there might be ways to get the financial outcome you desire at a much lower cost without too much extra hassle.