One change, same AI.
Your prompt
Look over the session times for the staff training day in the supplied timetable.
A stronger version
Look up the session times for the staff training day in the supplied timetable.
Here is the test: swap the particle for a plausible alternative, then swap the whole phrasal verb for a plain verb.
Try it on your own work.
Prompting Wizard is an open source prompting coach for Claude Code, Codex, ChatGPT and Claude, built around your own work. Thirty guided lessons, at your own pace.