Well I want my snake to grow perfectly so I'll feed him correctly =D
YAY! Good for you!!!:dancer:
In the past (before I knew better) I fed Cornflake, my first snake every 7 days when he was hatchling and though he grew slower than any of my others, it certainly didn't do him any harm and he is a big boy now, ironically quite big for his age! lol
But still, it is much better to feed them every 4-5days as recommended.
I've actually done both for hatchlings, and my snakes were fine and grew either way. Every 5 days and every 7 days. Of course on the every 5 days schedule they grow faster, but I don't think feeding every 7 days is starving your snake or stunting its growth.
However I do feel that feeding hatchlings every 4 days is too often.
Since the OP is asking about a subadult and not a hatchling, there is no way I would feed a snake that big every 5 days. Every 7 at most and maybe even less depending on its condition.