Sounds like TT didn't have your correct 2023 tax info if you were getting interview prompts stating it was zero when it wasn't actually zero. Usually this is carried over from prior year return, if not you have to input it. When you go to Other Tax Situations / Underpayment Penalty after the Farming/Fishing question (assuming this was No) it then asks for filing status and "2023 Tax Liability for 2210 Purposes", if incorrect you would enter the correct figure there. TT would then calculate the penalty based on 90% of 2024 if that was smaller etc, and then you can go thru the AI method similar to state.
