At 330 grams I think you will want to shoot for about once a week on the feedings. What size prey are you offering?

As for the size of the prey, some say that you should offer something that is about equal to the widest girth on your snake OR about 10 - 15% of the snakes body weight. I'm not sure which one is more important though. The first rat I tried was where it needed to be girth wise but more than 10 - 15% of Foster's body weight. I've asked before but didn't get an answer so I really can't tell you.

I'm willing to bet that once you switch to a more frequent feeding cycle you will end up with a nice size bp. I don't think I would go any more frequent than once a week though provided you are feeding appropriate size prey.

Hopefully somebody else will chime in and let you know if I was giving bad advice. I just thought since nobody else answered that I would give you my opinions.