For the time being, the knights didn't have apprentices bother with night duties. Because of the lack of maids or women in the area, meal duties lay solely on the apprentices' and squires' shoulders.
The knights strategized and took over the night patrol. They were certainly lacking sleep, but they were more used to it compared to those younger. That meant the apprentices all had to be up early to relieve the night watch of their duties and have breakfast ready for them so the knights could rest.
Having to rise early when sleeping was nearly impossible in a place like that was so difficult for any teenager. It made morale low each time the apprentices were robbed of their precious sleep and had to face another day.