Some snakes have better feeding responses than others. I personally do a 4 to 5 day feeding schedule for hatchlings. The better feeding responses get every 4 days the slower get every 5. I had a female last season who hatched in april, go on to never miss a meal until breeding season and went off feed in november. She was at 904g in 7 months. She was very well proportioned, no 'pin head' and not too plump. She was the perfect hatchling.
Based upon growth and proportion some would say I fed her at a perfect interval while others would say I overfed her. Its all a matter of circumstance and individual animals. Not every animal can grow like that, nor do I force meals on my animals.