Well it depends on the person faith
For me I will say get an object of prayer
Object of prayer in their own ways helps strengthens our faith when we have them
Tell the writer that he should prayer normally
And try reading, Psalm 91,25,55 and 26 before sleeping and in the morning
Before sleeping he should pray that God strengthen him with the Grace and power to overcome the power of the enemies in the dream
And make sure he ties the object of prayer on his hand or body
So e no go fall off
I promise you,he will come back with thanks
I prefer a Holy Rosary of prayer