We need to preprepare the materials for the workshop so nothing is left until the last minute.

She preprepared the documents before the meeting, so we could start on time.

I grabbed a preprepared meal from the fridge before heading to work.

She preprepares the documents every morning to avoid last-minute problems.

She was prepreparing the materials for the presentation when the schedule changed.

The prepreparation helped the team organize materials before the main preparation phase.