ST2589

Hi all. I'm a PAYE earner who has recently registered for self assessment and completed self assessments for 21-22, 22-23 and 23-24. For both 21-22 and 22-23 I (my partner) received child payment benefits, and since I was over what was then the income threshold I will need to repay those payments for both of those years in full. This was identified by the calculator when filing online. Fair enough obviously, but with a payment of £3k or so due, paying this in the next tax year would be preferable to an immediate payment to HMRC. Is there a way my tax code can be changed to account for this, or will it be done automatically? Thanks in advance for any insight.