Is the feeding scedule adjusted by weight or age? Assuming the feeder is the correct size for the snake...

Feed every 5 days until the snake is ??? grams or ??? months old?
Feed every 7 days until the snake is ??? grams or ??? months old?
Feed every 10 days until the snake is ??? grams or ??? months old?
Feed every 14 days until the snake is ??? grams or ??? months old?
Feed every 21 days until the snake is ??? grams or ??? months old?

Is there a chart somewhere?

Thanks, JohnNJ