What phrase might indicate a significant time spent in bed?

The phrase "much" suggests a greater quantity or extent, which can be interpreted as significant time spent in bed. When used in terms such as "much time," it conveys that a considerable amount of time was spent, indicating that the duration was not minimal. In contrast, "a little" suggests a small or insignificant amount of time, "a few" implies several but not necessarily a large or significant duration, and "none" indicates no time spent at all. Therefore, "much" is the phrase that most clearly communicates a considerable length of time in this context.