One of my snakes is possibly gravid...and I know she probably also looks overweight to some. I feed her a lot...a couple of pinkies every 4-5 days. She's a big girl with a healthy appetite to begin with and she needs to feed those babies...I can't deny her food or put her on a diet in good conscience while she is gravid. I think in the case of a gravid female...better to be somewhat overweight than underweight for the sake of the young.