How did you make this transition? E is 1 year on April 5. Did you start at 12 months? 11 months?

We have one 48 oz container of formula left for the house, which makes 356 ounces (or 60 6oz bottles) plus whatever our daycare ladies have (half a container probably). She's taking less formula as we go on. I feel like it's enough to get us to 12 months or just shy of....I was debating buying another canister, but i feel like it's kind of pointless.