S.L.
A.,
I am a working mom too and as a result, I like to do whatever I can to make the nighttime routine smooth. I use the removable Avery labels (#6460) to pre-print the dates for up to a month or two. This way I just peel them off and stick them on the bottles as I make them. They're also easy to pull off when you're all done. I use them in conjunction with Mabel's Labels which have her name on them and are dishwasher safe.
Hope this helps!