Check sprinkler filters and nozzles for clogs from particles or not easy water scale

https://elliotdnfg497.cloudhinter.com/posts/spring-lawn-sprinkler-maintenance-beginning-the-period-right

Check sprinkler filters and nozzles for clogs from debris or rough water scale. Routine cleaning restores spray styles, improves performance, and prevents misting that wastes water to evaporation.