I can’t tell you how many times I had ended up with little to no blankets after sleeping 4 four hours. Eventually, spouse and I decided that we would get two full-size blankets for the bed so that we could each have one. This has prevented so many restless nights.
Been doing this for 15ish years. Spouse likes to burrito, I toss and turn. And due to that I need a queen blanket so it doesn’t matter which edge is up. With a full I’ve got a 50 50 chance of ending up with the long side around my shoulders and my feet in the breeze.