Good question! I usually bagged it up to freeze every few days. I averaged 2 cups a day - sometimes a little more, sometimes a little less - so in 2 or 3 days I'd have a quart + (unless I used some). I'm a bit squirrely about milk being more than a few days old, so if I didn't get to it often enough, I'd bag the older stuff for soap, and the fresher stuff for cheese and fudge.
That's one of the things I've considered. I've read a lot of posts about the various machines, but none has really grabbed my interest. And it's a big investment for just a few sheep. I don't need a lot of milk, this has been mainly for the learning experience, for the sheep to earn a bit more towards their keep (sheep-milk soap), and for the chance to have some fun with making various things like cheese, yogurt, skyr, and other stuff from my own animals.I think you need a milk machine of some kind. Little teats are impossible to milk but when I milk with a machine it doesn't matter; a life saver.