First let me say that your snake looks just fine. I would not change a thing that you are doing.

Personally I feed hatchlings twice a week until 250-300 grams. Then I feed them weekly for the rest of their lives. Barring any of them trying to become a fatty and then I will put that individual on a diet. This is a marathon, not a sprint. Slow steady growth is what it is all about to have a healthy long lived snake.