Keep your sleep/wakeschedule on weekends.
这是2017全国卷Ⅲ阅读理解七选五中的一个句子。
大家老师说，这里的keep 用得不对，应该改为 keep to，我查了一下词典，仿佛也只查到keep to 与 schedule 搭配，没查到用 keep 与 schedule 搭配的。老师们如何看？
高考考试题keep a schedule的说法没问题，类似还有maintain aschedule.柯林斯词典就有keep a schedule 的讲解。https://www.collinsdictionary.com/zh/dictionary/english/keep-a-schedule
再给你提供两个外媒例句供参考：
1. Try to keep aconsistent schedule to ensure youget the proper amount of rest.
https://www.entrepreneur.com/article/315409
2. Keeping aregular sleep schedule even on weekends.
https://healthysleep.med.harvard.edu/need-sleep/what-can-you-do/good-sleep-habits