Fuzzies are to small.... Babies right out of the egg can take hoppers or rat crawlers ( i try to always use rats....) Any way... I would try something like a rat pup (eyes closed) If it is eating 3 fuzzies it should have a strong feeding response so the change should not be a problem. And you will notice a nice bulge in the snake... you should see this especially with small snakes or it is not a large enough meal