Chose "Biweekly" (assume that means "Fortnightly") and realised I should have chosen Other as it varies:
* Late Autumn to Early Spring (males and females as long as pre-breeding weight is regained) one feed, once every 3-4 weeks. I don't fully brumate, but my flat does have a drop in ambient temps as I work full time and the heating is only on for a few hours in the evenings.
* Early Spring to Late Autumn (males and non-breeding females) one feed a fortnight. Can be less if I spot those love handles creeping back, in which case they go down to one feed every three weeks. Most of my males will go on some length of fast during the breeding season anyway, which helps.
* Spring to Laying (breeding females) one feed a fortnight, with two prey items at a time for females who are in the low 300g range. For those that routinely fast before laying, smaller food sizes are offered as eggs develop, to ensure that they eat for as long as possible.
* Laying to Late Autumn (breeding females) one feed a fortnight, with two prey items at a time until pre-breeding weight is regained (one at a time once weight is regained). For those who appear to struggle with that, I switch to one slightly smaller prey item, weekly.
So no hard-and-fast rules for me. I juggle feeding regimes around as individual snakes seem to need it.