2024 PRSA contributions in 2025

My friend in her 30’s earned 50k in 2024, she paid €200 a month into a PRSA.

I know she can top up that amount with a lump sum payment before October 31st but is it also okay to use her regular monthly contributions (from say January to June 2025) to increase her 2024 contribution?

She plans to work less in 2025 so will probably only earn about 25k so would get more tax relief on the 2025 monthly contributions if claimed for 2024 but unsure if that’s allowed or not.

Not an expert and there are many better informed here but my experience is to make a payment into her PRSA for last year it will need to be done in a single payment. Contact the company they will give the transfer details and provide a certificate for revenue when the payment is complete. I do not think any pension provider would accept it any other way.

Thank you, that’s kind of what I thought but thought I would check here in case I was wrong