Your W-4 only goes to the employer, and tells the employer how much to withhold from your paycheck. It does not dictate how you file your tax return or what you can enter on your tax return. You just go ahead and claim your children on your tax return. It is not a problem. Enter your dependents and their information in MY INFO.
If you want to change your w-4 going forward for 2025, you can do that:
https://turbotax.intuit.com/tax-tools/calculators/w4/
https://www.irs.gov/individuals/tax-withholding-estimator
https://www.irs.gov/pub/irs-pdf/fw4.pdf
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**