Try a muscle massager for those cramps that can’t be stretched out. They are miserable. I have chronic nighttime muscle cramps and the ones in my shins, ankles and side of knee cannot be stretched out. I have a generic muscle massager similar to the thumper muscle massager and running that over the cramp at top speed for a couple minutes does the trick for the night. I’m thinking about trying the Bob and Brad mini muscle massager that says it’s quiet because mine is so loud and I live in a condo. When I run that in the middle of the night it’s like running a blender or vacuum. I’m not sure if the smaller version will work. You might try the massager on your calves before bed as a preventive measure. Check Amazon. Best of luck.