I feed Lilith (8 yr CB female normal) when she starts to look for food.. this is normally every 3 weeks or so but it can be as long as 6 to 8 weeks.. She once went 6 months without feeding and that was with me offering food every couple of weeks at first and then less often..... I generally feed 2 or 3 prey items over a couple of days - Saturday she had 2 medium gerbils and then on Sun as she was still displaying hunting behaviour I defrosted her a smallish rat. She ate all with relish and is now happily digesting. If she'd been hungry again today I'd have given her another gerbil. By feeding her when she appears hungry I don't get any refused food. When I tried feeding her every week or every fortnight I wasted a lot if rodents...). I have tried getting her into a routine of feeding every 2 weeks or whatever but she won't eat unless she wants to so I let myslef be guided by her...