Thanks. happy to help. What I have learned so far.

I had cle-dtw-ewr tomorow. dtw-ewr canceled early this afternoon. called the nw elite line and got them to put me on co, cle-ewr.

+know what you want before you call can be helpful (ie check the schedule)

+know alternatives (if co or dl nonstops what you have a cnx on, for example cle-ewr, ord-atl, msp-ewr

+doing this yourself is going to be lots easier than hoping nw will do it for you.