Working out with a busy schedule?

Monday through Friday I have a busy schedule I have school from morning till night then I go to work, I work graveyard shift so I only get 4 hours of sleep m I sleep a little during the day but on the weekends I'm free soo even if I eat right all week with lack of sleep... but the weekends I have a free schedule would I gain muscle if I do full body work outs or just stick to the simple three day play and not do full body on he weekend even if my schedule is super busy during the week