Poomwah, in nature a baby cornsnake does not find a mouse nest and only eat one pinky. It eats as many as it can get before the mother mouse returns or it is full.
If you want to put human terms or some "recipe" Internet feeding schedule on your 5 month old corn then that is your decision. But please read some books on cornsnakes. They are designed to eat ALOT of rodents by nature. Nature doesn't weigh animals or determine their caloric intake. Humans do.
Remember HUSBANDRY is the key to a healthy happy cornsnake!!
You'll be amazed at their appetites!

Cheers,
Ken