baby snakes feed on a 4 to 5 day schedule. Adolescents on a 7 to 10 day schedule and adults on a 14 to 21 day schedule. I have a male 6 years old, he's approximately 5 feet long, weighs about 500 grams and he eats a 35 gram mouse every 2 weeks.
Snakes will grow bigger and faster if they are fed more, but so will people and it's not good for us and it's not good for them.
Corn snakes are not big bodied snakes like Boas or Pythons. A corn snake can get fat and that's just not how they are supposed to be.
There is a feeding plan (most of us know it as the "Munson Plan") and you can find it online or probably even here on this website somewhere. It details how often you should feed and how much...etc....