I know a way to correct your transaction, bestlifedogservi.
To show the correct amount on your invoice, let's partially paid it in QuickBooks Online. By doing this, you can only see the fund that needs to be paid.
- Fo to the + New icon.
- Choose Receive Payment.
- Enter the customer's name.
- Select the invoice by ( $250) putting a checkmark.
- On the Payment column, enter the partial payment amount (please see the sample screenshot below).
- Click Save and close.

The status of the invoice will automatically change to Partial after following the steps given above. To get in-depth information about invoice payment, you can refer to this article: Record customer payment in QuickBooks Online.
After that, you can now see the correct amount that your customer needs to pay. You can then send the partially paid invoice to them. Then, if they want to pay, you can click on Receive payment and enter the remaining amount.
Once the invoice is completely paid, you start recording bank deposits. This is to ensure that the transactions in QuickBooks reflect real life to avoid any discrepancies in your books.
In case you'll need further assistance creating partial payment on your invoices, please reach out on this thread. I'm always available to help you out.