Retirement tax questions

But TurboTax needs a way to reflect the 2024 payment so that the IRS recognizes the April 2025 payment was made in 2024, which the IRS says you can do. That way,  you can then make only the remaining required  December 2025 payment in 2025.  The point is to not make two payments in 2025 and raise your tax bracket and Medicare tiers. Thank you!