from your 2022 tax you can subtract other withholding such as from wages or other sources. we can't see what Turbotax is doing. several possibilities so you have to be careful.
1) Turbotax may be using your 2022 withholding even if it's from what you withheld from the 2022 retirement distribution rather than just the amount withheld from other sources. if the other withholding is not going to repeat in 2023 you have to increase that withholding from the RMD
2) Turbotax may be using the 90% rule and assumes your 2023 tax will be the same as 2022. in its simplest form the 90% rule is simply that there won't be any federal penalties if your withholding equals 90% of your 2023 tax.
3) there may be other possibilities
in short, to avoid penalties your federal withholding (i'm assuming no estimated tax payments) must equal either 90% of 2023 tax or 100% of 2022 tax. since for most the 2023 tax can't be determined until the 2023 return is prepared the 100% of 2022 tax is the safer option.
if you have a state income tax, the rules will differ.
