Sounds like it. There aren't any hard and fast "rules" for feeding - what works for one will cause another to put on weight and might leave a different snake underweight. They're individual so you can tweak the feeding regime as necessary.
In your case I'd try going down to one fuzzy every ten days, but don't be surprised if it takes a while to see any weight loss. It's unusual for a youngster to get chubby on one fuzzy a week, but it can happen. Metabolism can be a very individual thing.