Basking Temperatures means surface temps! Like on cork bark, tiles, rocks, and drift wood. I have been breeding Blue Tongues since 1982, and know the "Whiskas Crave" works to start feeding. And NO it is not normal too stop feeding for months at a time unless Brumation or Cooling period. Gigas do not need brumation but temperature reduction to breed. "Crave" will prove itself. Raw eggs are not good as Chickens in USA are reproducing with Steriods and Antibiotics, plus the risk of Salmonela. Feeding is usually fresh vegs & sweet fruits, Garden snails that are breed indoors free of poisons & parastes, pinkie mice, low cal dog food moist, dry and canned Cat food, superworms, and waxworms. Try reading "Keeping Blue-Tongue Lizards" by Grant Turner and email Australian Reptilian Keeper Publications/ reptiles@ndtcon.net.au , and contacting Peter Weis at: pweise@velocity.net. But Remmber most breeders selling animals are no longer willing to give free information unless you buy from them.