Top up CPF retirement account

I have ERS at 55 year old, does it make sense to top up my ERS again when I am 56?

If you have met FRS in RA at 55, you can top up RA to prevailing FRS for up to $8k tax relief in subsquent years. Or your children can enjoy up to $8k tax relief by topping up your RA to prevailing FRS in subsequent years.

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Any top up beyond prevailing FRS won't have tax relief.