you have two options
1) one safe harbor requires you to pay in 100% of your 2024 tax liability. It's 110% if your 2024 AGI is $150K or more. 1/4 for each period (see 2) for period and due date)
2) use the 2024 form 2210 annualized income installment method to estimate your periodic liability. it's not really quarterly. the first 3 periods end 3/31 (due 4/15), 5/31 (due 6/15), and 8/31 (due 9/15). There are also online tax calculators, I cannot say how accurate they are when it actually comes time to file. the AIIM is geared towards paying in 90% of your 2025 tax liability.
either method can result in overpaying your taxes. That's just the way the tax laws work. paying 100% of your 2025 taxes on 1/15/2026 doesn't work because then there can be penalties for the first 3 quarters which may be mitigated by using the AIIM.
state laws may vary.
