I correct you - they do
They don't really go into a "sleep" like turtles do, but they are having a rest though from november - january if you lower the daily light to 6 hours and drop the tempature to 20 degrees celcius...dont feed during this time.
in january start to raise the daily hours of light and the degrees and when its back to normal start feeding again.
You CAN skip this - i do this as well - but for the best breeding process its the best to do.