This forum has no access to your return. Perhaps you don't owe the penalty.
There will be no federal penalties for not prepaying enough taxes if withholding and
- timely estimated tax payments equal or exceed 90% of your 2025 tax or
- timely estimated tax payments equal or exceed 100% of your 2024 tax (110% if your 2024 adjusted gross income was more than $150K) or
- the balance due after subtracting taxes withheld from 90% of your 2025 tax is less than $1,000 or
- your total taxes are less than $1,000
in the form 2210, if you check that the IRS should calculate your penalty, TurboTax will not compute any.