I use a loose schedule not wedded to anything to exactly usually Sunday nights but sometimes Saturday or Monday. Some that have skipped a few meals might get an extra mid week with the little ones if they are interested. They get on Sunday and every second Thursday or so. not a exact timetable just what works that week.
I tend to look at the interest level a animal that is really interested might get a second meal here and there the ones whom are not don't. I tend to allow the snakes to decide.