Backdating Child Benefit Class 3 credits

I have just registered my son, who is 5, for child benefits. I understand the benefit payments can only be backdated by 3 months. However, can the Child Benefit Class 3 credits for my state pension be backdated? I currently have no state pension credits for the preceding years. We were resident in the country and I was caring for him.

Hi,

If you have not received child benefit for previous periods, you do not receive the associated class 3 national insurance credits that are awarded with them. You have the option to pay voluntary national insurance for any tax years you have a shortfall.

Pay voluntary Class 3 National Insurance

Thank you.