our smallest one is now more than one year old.
Or more then 12 months old, for those counting in months (as is normal with babies).
And thankfully we do not have to write up what his food intake is during the day.
Offcourse we stopped with that before the boy was 12 months old.
But I can still remember those first couple (11 or so) months that we had to keep notes on how much he had eaten during the day. We used a true Baby Feeding Schedule. (yes, we where a little bit crazy, but it also helped us).