I feed/offer ALL my gtps an appropriate sized meal once a week. From newly hatched neonates to full grown adults. The neonates get day old pinks until they have grown a bit, then I upsize to large pinks, then fuzzies, hoppers and so on. I feed my largest 2k gm girls Jumbo mice and they are extremely healthy on these regular meals.
I think this species is important to grow up slow and steady, no need to power feed or try to bulk up quickly. Too many health related issues with improper diet, prolapses, obesity, poor fertility etc.
I'd definitely back off on those meals a lot. I like it when my snakes start to "hunt" again before getting their next meal.