It sounds like you're giving them good sized meals B. You could offer a second prey item every 2nd or 3rd feeding if they still seem hungry. Looking back through my records I was feeding 2 rat fuzzys, or 1 rat pup, per feeding when mine were 200g. I think yours are a little undersized for their ages but they'll grow fast! Sometimes breeders have them on more of a maintenance feeding regiment as opposed to one that's more growth oriented. I probably feed my snakes a little more generously than some of the other keepers but I don't power feed them at all. My younger snakes (all colubrids) eat 10-20% of their body weight every 5 days until they turn 1. After that they eat closer to 8-12% of their body weight every 7 days on average. I like to vary my feeding amounts and frequencies but they're usually within those parameters. For example Apollo was hatched in July 2014. He's a little over 600g. He gets either 2 rat weaners or a weaner and a chick every 5-6 days. That's 60-80g per meal. She-ra was hatched in Sep. 2013 and she's about 1850g. She usually eats 2 small rats and a chick every 7 days on average. That's about 150-180g per meal. She's ready for mediums but I still have a few smalls to finish off.