In general, everyone is offered a small to med-small rat once every 6-8 days, male and female alike. I don't offer any difference in prey. They kinda set their own feeding schedule. This time of year, for instance, the older males generally aren't interested in eating and the ladies are happy to take left overs.
Also, I don't worry about letting my males get 'too big.' Unless he's obese (really, I don't like my females to be too fat, either), I'm unconvinced there's any reason to sweat it.