I have had shinglebacks for many years and most of them slow right down over winter but unlike my Blue-tongues they like popping out of brumation every few weeks. Watch they don't get too far under 10-12 degrees as they are susceptible to pneumonia (several of mine go to the coolest end every year and always get the sniffles: so my coolest end is now always above 10 degrees). Mine love kangaroo mince (not much fat) with fresh veggies chopped through and snails. I only feed every few weeks and just a few mouthfulls, they don't want more than that (cold in Canberra although they are in a 14 degree reptile room). Must do alright cause they breed and are very healthy.