In this case, there is no desire to balance the checkbook at the end of the month -- just to track expenditures.
That simplifies things a bit, and also necessitates a different answer from the one I already gave. (Please wait 24 hours to accept an answer, because someone else is certain to have a good idea, too.)
Can you outline a slightly simplified ...
For example, one could start with "toiletries," then "over the counter medications," next "gifts" (if any), and then all the groceries as such at the end.
When shopping at Walmart, Kmart, Target, etc that sell everything, I asked my wife to split her shopping cart into two separate purchases:
all the stuff you buy at a traditional grocery store, and