Withdrawal from def. comp. not enough tax (CA) taken out. Now shows required quarterly payments for 2025. How to avoid, now know to have more taken out of a withdrawal?

If you have more taken out of each payment from the deferred comp, you do not need to also make estimated payments.  The estimated payment vouchers are generated to help you ensure that you do not have penalties for underpayment in the future.  They are not an obligation, but a suggestion.  It is okay to ignore them if you have instead adjusted your withholding.