Hey @Larmier_Anthony, you might want to check out this thread for a first hand report on the topic.
tl;dr would be to set EXECUTIONS_DATA_PRUNE, EXECUTIONS_DATA_MAX_AGE, and DB_SQLITE_VACUUM_ON_STARTUP environment variables as suggested here in our docs and then restart n8n.
Make sure you have space available when doing so as my understanding is that SQLite creates a copy of your database without the data to remove, before removing the old database (so this process will consume space before it frees up space).