Tracking of baby's intake & output

If you have any of the below questions, which I do...then tracking the intake/output of baby, similar to what the hospitals do, could be the way to go...

- when was last feed and how much was it? when is next feed?

- how much has baby drank in the day?

- is the number of feeds sufficient? (check number of times of urine/output...or the looks of the output..)