You don't have to be so formulaic about feeding intervals. What do you think they do in the wild? They eat when they can, if they're hungry, at whatever age they may be. Sure, adults can be fed less often, but so can youngsters, it's just us who choose to feed the youngsters more often, for a couple of reasons - we want them to grow fairly quickly and feeding them is always an interesting experience, and we also have this thing about feeding animals REGULARLY, which comes from thousands of years of feeding mammal and bird pets, whose food requirements are much more regulated by their faster metabolism.
Even if we gave our baby pythons a decent meal only every couple of months, they would still thrive, just grow slower, and the owner impatience of seeing their animals actually do something wouldn't be satisfied so often.
AS far as winter goes, just supply heat for 8-10 hours during the day, off for the rest of the time.
Jamie