I'm not sure where your located but me personally,
I heat and feed everything normally until the end of April, I keep my males lean and put as much weight on my girls as possible.
from May onwards is when I cool and the adults are no longer fed, as Cairns doesn't get to cool even in the middle of winter I don't do much heat from then on. They will occasionally get a few hours of heat in the morning if it gets really cold.
i want introduce males until June/July at the earliest.
Carpet pythons arnt to difficult to breed and there's heaps of information available online, check out sxr site.