all depends really on how the snake feeds and what your feeding it. Feed it to small of a rodent and the growth will be slower. Have a picky eater and it wont grow like others. There are some that put 700 grams on snakes in a year or less and some who have snakes that are 3 years old and just hit the 700 gram mark. Its really hard to say. If it looks to skinny feed it every 5 days the correct size rodent and it will gain the proper weight back. Just dont power feed.