I don't know that much about giants, but my thought is this. You have to do your research and you have to be prepared. And in being prepared you have to be prepared for the largest possible size that each particular snake could get to be. I feel that the best thing for any animal is to feed them properly so they can grow at a proper rate. Any growth that comes too fast or too slow is unhealthy as far as I know, and if not unhealthy at a present time can present problems for that animal in the future. So IMO, I would research and see what the best feeding schedule is for that animal to thrive, whether it be every 5 days, 7 days, 10 days, or whatever the case may be for any particular animal. You should not feed on a schedule to prevent growth, you should feed on a schedule that allows that animal to thrive and grow properly.