How to give partial refund to customer after application and accounting of receipt with transaction

We want to check for feasibility of giving partial Refund to the customer after Transactions are fully applied to Receipts and the transactions and receipts are both fully accounted in AR. For the moment we are reversing the receipt after unapplying transactions from receipts and we are creating credit memo and creating new receipts and applying the transaction and credit memo but this is time consuming so we want to check for feasibility of partial refund to avoid this long steps