My bad, I can't say that overfed babies WILL go off feed.
I do apologize for that.
You'll have to forgive me as I often forget when I post a lot of the time here that wholly 90% of the posters here (even the ones with thousands of posts) only have a few ball pythons and/or have only been a part of this hobby/business for a relatively short period of time, which equates to rather limited real-life experiences.
That said, I can tell you from my experiences of almost a decade of breeding, during which time, I have admittedly tried it all. In that time, I've collected some valuable information with my rather informal studies, (sorry, none of it has been published) that if you overfeed a baby early on (whether they 'want' to overeat or not, or whether or not you 'think' they have a 'faster metabolism' than 'normal babies') 95% of the time, that hatchling will hit a brick wall around a year and either stop eating altogether, or greatly reduce the amount of meals he will accept.
Another thing that I have learned over the years is that when a hobbyist comes to a forum 'looking for advice', he's not really looking advice, but rather someone to agree with his already made up mind.
Feed away, and good luck.