During the trip you will see if the vibes are ok or if you can improve things like light, music. If meditating sucks go with the flow and just chill. Actually in my experience by just chilling the best effect occured. But you see everybody has a different "method"
And even if nothing happens, just enjoy the trip. Sooner or later it will be obvious. The more mindful you become in everyday life the less dosage you need to see truth.