5 a day

[Annabanana1812]

Daft question but is adult portion of 5 a day same for babies or is it less can't imaging it's the same

Think idea is it should be fist-sized, so same size as your DC's fist.

Yep size of babies fist.

Worth mentioning 5 a day doesn't count before 1 year old. Due to the amount of food they eat total, the higher proportion of fat/protein needed and lower amount of fibre, and they take vitamins.
There were some cases a few years back of nurseries causing poor weight gain and cavities by trying to do "5 a day" too young.