Child Benefit - letter from Garda or medical professional confirming residency

We recently had our first child. Better half has received the CB1 form from DSP. She has not given the option to claim online so has to do paper form. Part 8 mentions needing a letter from Garda or medical professional confirming residency. Any idea what we need to bring down to the Garda station for this and will they be happy enough to write a letter? Seems odd there’s no small section for them just to sign.

Does everyone who claims child benefit have to go to a Garda station to prove residency?

Congrats on the new baby

The form is quite comprehensive & seems to enquire in detail into parent(s) and child's residency.

It requests a "Letter from, playschool, crèche, Gardaí, or medical practitioner confirming residency of each child not
of school going age."

I'm pretty sure if you ring your GP or visit your local Garda station, they'll have a standard template letter they can provide.