Lastly, If one sees Imam Hossein (as) in dream, telling her/him to be patience for something that will happen in your life, and right after one year a crisis takes place.
(Crisis that creates problem for a family, but Alhamdolila, it got fixed by the grace of Allah azj and the kind pure Ahlulbayt)

What does it mean? Can Imam come to anyone to console them and to advice them to practice patience in a upcoming crisis, in a dream?

Yes. It is possible.