One of the defining aspects of a baseball season is how long it is (at least in normal circumstances). A lot can happen over the course of 162 games. There will be good stretches and bad ones, the unexpected will happen when you least expect it. It is not a sports season designed for fickle fans.
Which is all a useful frame for how to interpret the last two weeks of Chicago Cubs baseball, which have been bad by any standard. The Cubs were similarly bad to start April, before rallying to look like one of the best teams in baseball in May.