Question - Feeding armies at PCs

Greetings all!

I need draw upon the collective wisdom of this group in an effort to
clarify the "Army Feeding" stage of a turn.

I have 3 armies sitting at a town and want to know how food will
distributed during the consumption phase.

Army 1 - 100 HC w/ 140 food
Army 2 - 1,700 HI w/ 1260 food
Army 3 - 100 HI w/ 62 food

By my understanding all 3 armies should qualify for fed status on the
turn. There is 2,462 food available (1,462 in armies plus 1,000 from
the PC) with demand for 2,000 food. Following the consumption phase,
what food will remain in each of these armies? Is there any way to
ensure that I have a minimun of 101 food remaining in army #3 while
feeding all 3 armies?

The sharing of your advice & understanding on this issue would be
greatly appreciated!

Chris