A very good possibility, that is how they typically go when they break. How many miles on her? And what do you use it for? Heavy towing in high gear will eat up a belt quick, as we are all probably guilty of not using low as often as we should. Open her up and let us know your findings, unfortunately belts are not under warranty unless you only have a few miles on it.
just over 900 miles, used for work, plenty of towing, in my back yard, about 5 cords of firewood annually on a sled in loads of 750-1000 lbs, I use low range in the woods, also plenty of street use, prolly more than anything else, most of the time with a full load of cargo and 2 large people, other times, I am pulling a trailer or my little tow behind backhoe (990lbs) trailer maybe over loaded at times, I've had it push me beyond comfortable control a couple times, I have learned the limits, I always use high range on the street, I hate to limit my speed to 25mph when it doesn't seem to work any harder to get to 45
I have noticed top speed dropping the past hundred miles, from 48-49 that it used to get down to 46, maybe 47 going down hill
I am not used to detecting CVT drive belt wear, this is first vehicle of any type that I have ever owned, otherwise, closest I have come is very limited experience 40 years ago with sleds