As the hay stack gets smaller, I find myself counting bales more often. Continually re-figuring out how long until we need to buy more and considering whether we bought appropriately last time.
I don't really worry about the feed and minerals too much. We use Ranch-Way which is made in Fort Collins just a few miles away. So we have very easy access to the feed. But the hay and alfalfa, I think about. A lot.
Today we have 39 bales of hay and 10 bales of alfalfa. At a half-bale of hay per day and one bale of alfalfa per week, it should keep everyone well fed until mid-April-ish.
That means the hay we bought is lasting about as planned. However, now that I'm thinking about the idea of buying hay in April, I suspect I should buy enough to bridge us to August-ish then buy for a year at a time.