There is no such thing as controlling the growth of the snake by adjusting a diet! Well for the most part that is.... some "breeders" will power feed a snake to make it grow to an adult breedable size faster than would be the norm. The snakes internal organs do not mature and grow as fast as the snake so typically will cause some major health issues. On the other hand under feeding is going to mean slow growth for the snake. The snake is going to be malnourished , under fed, under weight, and unhealthy. No matter how you look at the feeding thing it is bad.... stick with the proper feeding frequency and prey size if you want to have a healthy snake. When it comes time to purchase a snake buy one that doesnt have the potential to get bigger than you are comfortable handling.