After a snake eats they will usually roam around their cages. What they are doing is looking for more food. They go into hunt/eat mode. It usually takes an hour or two for them to get out of that mode but they will. And sometimes you can use this hunting mode to your advantage for switching to F/T, after they eat a small live or pre killed mouse, not using tongs to pre kill, you can try offering a F/T but just use smaller food items.