All ll four of ours have quit eating; I still offer every week but I only take out one frozen rat. If it gets eaten I'll just take out another. The two females quit eating in October and the two males quit in November.
Bumble weighs 1800 grams
Fatty weighs 1500
Sneaky is at 900
amd Spot is the smallest at 700
Last winter Sneaky and Spot were hatchlings and they ate every week like clockwork while the females quit around November and resumed eating in March. Fatty only ate 10 times last year.
Just keep offering every week; they eat when they're ready.