yes if you have met safe harbor but paid it 'early' in Q1-3 then you don't need to pay more ES, the smaller safe harbor amount based on 90% of 2025 will be spread out over all 4 quarters and you will show overpayments in Q1-3 that will carry forward to Q4 and your refund.
problems arise if you didn't pay enough early in the year, you could still meet your safe harbor for the year in total but if you only paid it in later quarters you could still be penalized for an underpayment in Q1 etc, even tho you have a refund.
