Have any actual literature that backs any of that up?
To the OP, some useful information: These animals will mostly eat and grow at their own rate. At 500 grams an animal that becomes a little finicky is not in danger of starving itself to death. In the western hemisphere, its starting to cool down. If your little guy is sexually mature (which at 500 grams some males can be) he's probably just more interested in possible ladies than in food. Given his feeding record, offer him a mouse or two every 7-10 days and he'll let you know when he's hungry again. I've had several males do this to me, its not a big deal.