Yeah, I noticed that when I come back to a "finished" game the berry bush is 98 or 99 and the crops are in "waiting" mode again. I haven't checked the food before and after, but I'm pretty sure that the Farmers do what they can, but the GC doesn't help.

The berry bush will replenish at 30 berries per Village year and the crops should grow also, but it might not be enough for a fully populated village.

I've also noticed that the GC will keep keep adding to the berry bush (400 berries at a time) indefinately, so you may want to build up lots of berries before you shut it down.

Either that or keep the no fishing game on 1/2 speed so they eat less per "off" time.