really thats more dependent on your body. I'm guessing you are doing a split and just hitting each body part 1x each week. You might want to try taking the same program, and making it a 3 days out of 5 rotation so
M Tu Th Sa Su Tu
so assuming you are doing a split as say back+shoulders, chest, legs
back monday, legs tues, off wed, chest thurs, off fri, then back sat legs sun off mon chest tues
etc