ProSeries subtracts your data entry as it does not know how many account holders and how many beneficiaries.  Either keep an Excel type of worksheet for any carryovers or input a supporting worksheet to subtract out the carryovers, such as:

Account holder Jane, beneficiary Mary 222 contribution $10,000.  

Less: Carryover to 2023 -$7,500.

So then ProSeries will report the correct $2,500 max deduction per account holder, per beneficiary.