I don't know how much good I can do as an american but I stand in solidarity with my british friend in calling for a second referendum.

https://www.independent.co.uk/news/uk/politics/brexit-referendum-millions-leave-voters-best-for-britain-no-deal-theresa-may-conservative-government-a8521346.html

Dear Prime minister Teresa May do the right thing. Give us a second referendum. The public has changed it's mind. Let the voters decide.